The Cincinnati Zoo & Botanical Garden is the second oldest
zoo
A zoo (short for zoological garden; also called an animal park or menagerie) is a facility where animals are kept within enclosures for public exhibition and often bred for conservation purposes.
The term ''zoological garden'' refers to zoology, ...
in the United States, founded in 1873 and officially opening in 1875. It is located in the
Avondale neighborhood of
Cincinnati, Ohio
Cincinnati ( ; colloquially nicknamed Cincy) is a city in Hamilton County, Ohio, United States, and its county seat. Settled in 1788, the city is located on the northern side of the confluence of the Licking River (Kentucky), Licking and Ohio Ri ...
. It originally began with in the middle of the city, but has spread into the neighboring blocks and several reserves in Cincinnati's outer suburbs. Several historic buildings were designated as a
National Historic Landmark
A National Historic Landmark (NHL) is a National Register of Historic Places property types, building, district, object, site, or structure that is officially recognized by the Federal government of the United States, United States government f ...
in 1987.
The zoo houses over 500 species, 1,800 animals and 3,000 plant species. In addition, the zoo also has conducted several
breeding program
A breeding program is the planned breeding of a group of animals or plants, usually involving at least several individuals and extending over several generations. There are a couple of breeding methods, such as artificial (which is man made) a ...
s in its history, and was the first to successfully breed
California sea lion
The California sea lion (''Zalophus californianus'') is a coastal eared seal native to western North America. It is one of six species of sea lions. Its natural habitat ranges from southeast Alaska to central Mexico, including the Gulf of Califo ...
s. In 1986, the Lindner Center for Conservation and Research of Endangered Wildlife (CREW) was created to further the zoo's goal of conservation.
The zoo is known for being the home of
Martha
Martha (Aramaic language, Aramaic: מָרְתָא) is a Bible, biblical figure described in the Gospels of Gospel of Luke, Luke and Gospel of John, John. Together with her siblings Lazarus of Bethany, Lazarus and Mary of Bethany, she is descr ...
, the last living
passenger pigeon
The passenger pigeon or wild pigeon (''Ectopistes migratorius'') is an bird extinction, extinct species of Columbidae, pigeon that was endemic to North America. Its common name is derived from the French word ''passager'', meaning "passing by" ...
,
and of
Incas
The Inca Empire, officially known as the Realm of the Four Parts (, ), was the largest empire in pre-Columbian America. The administrative, political, and military center of the empire was in the city of Cusco. The Inca civilisation rose fr ...
, the last living
Carolina parakeet
The Carolina parakeet (''Conuropsis carolinensis''), or Carolina conure, is an extinct species of small green neotropical parrot with a bright yellow head, reddish orange face, and pale beak that was native to the Eastern, Midwest, and Plains ...
.
The zoo is an accredited member of the
Association of Zoos and Aquariums
The Association of Zoos and Aquariums (AZA), originally the American Association of Zoological Parks and Aquariums (AAZPA), is an American 501(c)(3)
nonprofit organization founded in 1924 and dedicated to the advancement of zoos and public aqu ...
(AZA),
and a member of the
World Association of Zoos and Aquariums
The World Association of Zoos and Aquariums (WAZA) is the "umbrella" organization for the world zoo and aquarium community. Its mission is to provide leadership and support for zoos, aquariums, and partner organizations of the world in animal ...
(WAZA).
A 2014 ranking of the nations's best zoos by ''
USA Today
''USA Today'' (often stylized in all caps) is an American daily middle-market newspaper and news broadcasting company. Founded by Al Neuharth in 1980 and launched on September 14, 1982, the newspaper operates from Gannett's corporate headq ...
'' based on data provided by the
Association of Zoos and Aquariums
The Association of Zoos and Aquariums (AZA), originally the American Association of Zoological Parks and Aquariums (AAZPA), is an American 501(c)(3)
nonprofit organization founded in 1924 and dedicated to the advancement of zoos and public aqu ...
lists the Cincinnati Zoo among the best in the country. A 2019 reader's choice ranking of the nation's best zoos by ''USA Today'' named the Cincinnati Zoo the top zoo in North America.
History

In 1872, three years before the zoo's creation, Andrew Erkenbrecher and several other residents created the ''Society for the Acclimatization of Birds'' in Cincinnati to acquire insect-eating birds to control an severe outbreak of caterpillars. A collection of approximately 1,000 birds imported from Europe in 1872 was housed in
Burnet Woods
Burnet Woods, owned and operated by the Cincinnati Park Board, is an city park in Cincinnati, Ohio. The neighborhoods of Clifton and University Heights bound the park on three sides, while the University of Cincinnati west campus forms the ...
before being released. Besides a group of birds that he had collected, Erkenbrecker owned a group of mammals of all types, including monkeys and an elephant that he had bought from a circus.
In 1873, members of the Society of Acclimatization began discussing the idea of starting a zoo and founded The Zoological Society of Cincinnati.
One year later, the Zoological Society of Cincinnati purchased a 99-year lease on in the cow pasture known as Blakely Woods.
The Cincinnati Zoological Gardens officially opened its doors on September 18, 1875.
Architect
An architect is a person who plans, designs, and oversees the construction of buildings. To practice architecture means to provide services in connection with the design of buildings and the space within the site surrounding the buildings that h ...
James W. McLaughlin, who constructed the zoo's first buildings, designed the earliest ''completed''
zoological
Zoology ( , ) is the scientific study of animals. Its studies include the anatomy, structure, embryology, Biological classification, classification, Ethology, habits, and distribution of all animals, both living and extinction, extinct, and ...
exhibits in the United States.
[
] The zoo began with eight
monkey
Monkey is a common name that may refer to most mammals of the infraorder Simiiformes, also known as simians. Traditionally, all animals in the group now known as simians are counted as monkeys except the apes. Thus monkeys, in that sense, co ...
s, two
grizzly bear
The grizzly bear (''Ursus arctos horribilis''), also known as the North American brown bear or simply grizzly, is a population or subspecies of the brown bear inhabiting North America.
In addition to the mainland grizzly (''Ursus arctos horr ...
s, three
white-tailed deer
The white-tailed deer (''Odocoileus virginianus''), also known Common name, commonly as the whitetail and the Virginia deer, is a medium-sized species of deer native to North America, North, Central America, Central and South America. It is the ...
, six
raccoon
The raccoon ( or , ''Procyon lotor''), sometimes called the North American, northern or common raccoon (also spelled racoon) to distinguish it from Procyonina, other species of raccoon, is a mammal native to North America. It is the largest ...
s, two
elk
The elk (: ''elk'' or ''elks''; ''Cervus canadensis'') or wapiti, is the second largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. ...
, a
buffalo
Buffalo most commonly refers to:
* True buffalo or Bubalina, a subtribe of wild cattle, including most "Old World" buffalo, such as water buffalo
* Bison, a genus of wild cattle, including the American buffalo
* Buffalo, New York, a city in the n ...
, a
laughing hyena
The spotted hyena (''Crocuta crocuta''), also known as the laughing hyena, is a hyena species, currently classed as the sole extant member of the genus ''Crocuta'', native to sub-Saharan Africa. It is listed as being of least concern by the IUC ...
, a
tiger
The tiger (''Panthera tigris'') is a large Felidae, cat and a member of the genus ''Panthera'' native to Asia. It has a powerful, muscular body with a large head and paws, a long tail and orange fur with black, mostly vertical stripes. It is ...
, an
American alligator, a circus
elephant
Elephants are the largest living land animals. Three living species are currently recognised: the African bush elephant ('' Loxodonta africana''), the African forest elephant (''L. cyclotis''), and the Asian elephant ('' Elephas maximus ...
, and over four hundred
bird
Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...
s, including a talking
crow
A crow is a bird of the genus ''Corvus'', or more broadly, a synonym for all of ''Corvus''. The word "crow" is used as part of the common name of many species. The related term "raven" is not linked scientifically to any certain trait but is rathe ...
.
The first guide book about the Cincinnati Zoo was written in 1876 in German. The founders of the zoo, including its first general manager, were German immigrants and the city had quite a large German-speaking population. The first English-language edition (illustrated) was published in 1893.
In its first 20 years, the zoo experienced many financial difficulties, and despite selling to pay off debt in 1886, it went into receivership in 1898. In order to prevent the zoo from being liquidated, the stockholders chose to give up their interests of the $225,000 they originally invested.
For the next two years, the zoo was run under the Cincinnati Zoological Company as a business. In 1901, the Cincinnati Traction Company, purchased the zoo, hoping to use it as a way to market itself to potential customers. They operated the zoo until 1917, when the Cincinnati Zoological Park Association, funded by donations from philanthropists Mary Emery and Anna Sinton Taft and a wave of public desire to purchase the increasingly popular zoo, took over management. In 1932, the city purchased the zoo, an action that had been advocated for by Ohio state senator
Robert J. O'Brien
Robert J. O'Brien (June 5, 1858 – May 9, 1948) was an American real estate developer, politician, and philanthropist. He served on the Cincinnati City Council and in the Ohio Senate.
Biography Early life
Robert J. O'Brien was born in New ...
in 1916, and started to run it through the Board of Park Commissioners. This marked the zoo's transition from its period of financial insecurity to its modern state of stable growth and fiscal stability.
In addition to its live animal exhibits, the zoo houses refreshments stands, a dance hall, roads, walkways, and picnic grounds. Between 1920 and 1972, the
Cincinnati Summer Opera performed in an open-air pavilion and were broadcast by NBC radio.
Historic structures
In 1987, parts of the zoo were designated as a National Historic Landmark, the Cincinnati Zoo Historic Structures, due to their significant architecture featured in the Elephant House, the Reptile House, and the Passenger Pigeon Memorial.
Four zoo buildings were listed on the National Register in 1975 as the "Cincinnati Zoo District", although they were removed in 1999. This district comprised the
Kemper Log Cabin (built in 1804 and moved to the zoo in 1912), the Aviary, the Monkey House, and the Elephant House, the oldest existing structures in the complex at that time.
[Owen, Lorrie K., ed. ''Dictionary of Ohio Historic Places''. Vol. 1. St. Clair Shores: Somerset, 1999, 578.] The Monkey House and the Elephant House were separately included in the Cincinnati Zoo Historic Structures designation in 1987 and named a
National Historic Landmark
A National Historic Landmark (NHL) is a National Register of Historic Places property types, building, district, object, site, or structure that is officially recognized by the Federal government of the United States, United States government f ...
.
[Cincinnati Zoo Historic Structures](_blank)
, National Park Service
The National Park Service (NPS) is an List of federal agencies in the United States, agency of the Federal government of the United States, United States federal government, within the US Department of the Interior. The service manages all List ...
, 2008. Accessed 2013-11-26. Built of concrete and stone, the Monkey House had been constructed by 1880, along with the Aviary, and the Elephant House was built in 1902. The Kemper Log Cabin was moved to
Sharon Woods Village in
Sharonville in January 1982.
Elephant House

Equipped with
minarets
A minaret is a type of tower typically built into or adjacent to mosques. Minarets are generally used to project the Muslim call to prayer (''adhan'') from a muezzin, but they also served as landmarks and symbols of Islam's presence. They can h ...
and a windowed dome, the Elephant House was built to evoke the
Taj Mahal
The Taj Mahal ( ; ; ) is an ivory-white marble mausoleum on the right bank of the river Yamuna in Agra, Uttar Pradesh, India. It was commissioned in 1631 by the fifth Mughal Empire, Mughal emperor, Shah Jahan () to house the tomb of his belo ...
and a sense of
contemporary India. This concrete structure measures . The zoo followed the pattern of many other zoos, which constructed animal houses in the styles of the countries whence the animals came, but the Elephant House was one of the last zoo buildings in the United States constructed with such a philosophy. Designed by architects Elzner and Anderson, it was placed atop the zoo's highest hill. Its original cost was $50,000, and in later years the zoo has expended further money on renovations.
[Kraft, Joy W. ''The Cincinnati Zoo and Botanical Garden''. Charleston: Arcadia, 2010.]
Reptile House
Originally built as the Monkey House, the Reptile House is a round
Moorish Revival
Moorish Revival or Neo-Moorish is one of the exotic revival architectural styles that were adopted by architects of Europe and the Americas in the wake of Romanticism, Romanticist Orientalism. It reached the height of its popularity after the mi ...
building designed by
James W. McLaughlin for use as the aviary. Its design centers around a large dome more than high, with numerous windows and
skylights
A skylight (sometimes called a rooflight) is a light-permitting structure or window, usually made of transparent or translucent glass, that forms all or part of the roof space of a building for daylighting and ventilation purposes.
History
O ...
that enable it to be lit by sunlight, in addition to
Corinthian columns
The Corinthian order (, ''Korinthiakós rythmós''; ) is the last developed and most ornate of the three principal classical orders of Ancient Greek architecture and Roman architecture. The other two are the Doric order, which was the earliest, ...
. Although it was expanded in 1922 by the construction of a veterinary hospital, the zoo arranged for an extensive remodeling to prepare it for the reptiles that were first placed within it in 1951. Zoo historians claim that the Reptile House was the oldest zoo building anywhere in the United States.
The original Aviary no longer stands, having been destroyed in the 1970s;
a collection of gorilla exhibits occupies the site now.
Animals and exhibits
Elephant Reserve (currently unoccupied)

The Herbivora building was constructed in 1906 for $50,000, a huge sum at the time, which was home to the zoo's
Elephants
Elephants are the Largest and heaviest animals, largest living land animals. Three living species are currently recognised: the African bush elephant (''Loxodonta africana''), the African forest elephant (''L. cyclotis''), and the Asian ele ...
,
Giraffes
The giraffe is a large African hoofed mammal belonging to the genus ''Giraffa.'' It is the tallest living terrestrial animal and the largest ruminant on Earth. It is classified under the family Giraffidae, along with its closest extant re ...
,
Hippopotamuses
The hippopotamus (''Hippopotamus amphibius;'' ; : hippopotamuses), often shortened to hippo (: hippos), further qualified as the common hippopotamus, Nile hippopotamus and river hippopotamus, is a large semiaquatic Mammal, mammal native to su ...
, and
Rhinoceroses
A rhinoceros ( ; ; ; : rhinoceros or rhinoceroses), commonly abbreviated to rhino, is a member of any of the five extant taxon, extant species (or numerous extinct species) of odd-toed ungulates (perissodactyls) in the family (biology), famil ...
until the late 1990s. Listed on the National Register of Historic Places in 1975, it is considered one of the most spectacular historic buildings in the zoo world. At long and , this was the largest and most complete concrete animal building in the world, intended for hoofed animals. In 2000, the attraction became Vanishing Giants, featuring
giraffes
The giraffe is a large African hoofed mammal belonging to the genus ''Giraffa.'' It is the tallest living terrestrial animal and the largest ruminant on Earth. It is classified under the family Giraffidae, along with its closest extant re ...
,
okapis and
elephant
Elephants are the largest living land animals. Three living species are currently recognised: the African bush elephant ('' Loxodonta africana''), the African forest elephant (''L. cyclotis''), and the Asian elephant ('' Elephas maximus ...
s. From 2007 to 2008, the giraffe and okapi yards were renovated into a food court area and their respective species moved to other areas in the zoo. It has since undergone several renovations and became the Cincinnati Zoo's Elephant Reserve at that time.
Elephant Reserve was the home to two subspecies of the
Asian elephant
The Asian elephant (''Elephas maximus''), also known as the Asiatic elephant, is the only living ''Elephas'' species. It is the largest living land animal in Asia and the second largest living Elephantidae, elephantid in the world. It is char ...
in a exhibit with a 60,000 gallon pool in the female yard. The zoo has been trying to breed the two, but they have been unsuccessful since their last baby in 1998.
On the October 1st of 2024, the elephants were moved to the Elephant Trek. Plans for what will become the current Elephant Reserve of becoming a giraffe tower have not been released to the public yet.
P&G Discovery Forest
Renovated in 1989, this classroom is used for live animal demonstrations for school groups and zoo visitors presented regularly during the summer. The building houses a few species, including a
Linnaeus's two-toed sloth
Linnaeus's two-toed sloth (''Choloepus didactylus''), also known as the southern two-toed sloth, unau, or Linne's two-toed sloth is a species of sloth from South America, found in Venezuela, Suriname, Guyana, French Guiana, Colombia, Ecuador, Per ...
s,
blue-and-yellow macaw
The blue-and-yellow macaw (''Ara ararauna''), also known as the blue-and-gold macaw, is a large Neotropical parrot with a mostly blue dorsum, light yellow/orange venter, and gradient hues of green on top of its head. It is a member of the large g ...
s, and
boa constrictor
The boa constrictor (scientific name also ''Boa constrictor''), also known as the common boa, is a species of large, non-venomous, heavy-bodied snake that is frequently kept and bred in captivity. The boa constrictor is a member of the Family (b ...
s. It also contains many small animals used for demonstrations as part of the zoo’s visitor engagement program.
Eagle Eyrie
This flight cage opened in 1970 as one of the largest flight cages of its time. Originally containing
bald eagle
The bald eagle (''Haliaeetus leucocephalus'') is a bird of prey found in North America. A sea eagle, it has two known subspecies and forms a species pair with the white-tailed eagle (''Haliaeetus albicilla''), which occupies the same niche ...
s, these were moved elsewhere, and the exhibit currently features a
Steller's sea eagle
Steller's sea eagle (''Haliaeetus pelagicus''), also known as the Pacific sea eagle or white-shouldered eagle, is a very large Diurnality, diurnal bird of prey in the family Accipitridae. It was described first by Peter Simon Pallas in 1811. No ...
and an
Andean condor
The Andean condor (''Vultur gryphus'') is a South American New World vulture and is the only member of the genus ''Vultur''. It is found in the Andes mountains and adjacent Pacific coasts of western South America. With a maximum wingspan of and ...
.
Reptile House
The Reptile House is America's oldest surviving zoo building, built in 1875. Originally, it housed monkeys and other primates until 1951. Now, it is home to over 30 reptile species from around the world in both indoor and outdoor exhibits. Selected species include
Chinese alligator
The Chinese alligator (; ), also known as the Yangtze alligator (), China alligator, or historically the muddy dragon, is a crocodilian endemic to China. It and the American alligator (''A. mississippiensis'') are the only living species in th ...
s,
Gila monster
The Gila monster (''Heloderma suspectum'', ) is a species of venomous lizard native to the Southwestern United States and the northwestern Mexico, Mexican state of Sonora. It is a heavy, slow-moving reptile, up to long, and it is the only ve ...
s,
brown anole
The brown anole (''Anolis sagrei''), also known Common name, commonly as the Cuban brown anole, Bahaman anole, or De la Sagra's anole, is a species of lizard in the Family (biology), family Dactyloidae. The species is native to Cuba, the Bahamas, ...
s,
emerald tree monitor
The emerald tree monitor (''Varanus prasinus'') or green tree monitor, is a small to medium-sized arboreal monitor lizard. It is known for its unusual coloration, which consists of shades from green to turquoise, topped with dark, transverse do ...
s,
quince monitors,
Pascagoula map turtle
The Pascagoula map turtle (''Graptemys gibbonsi)'' is a species of turtle in the Family (biology), family Emydidae. The species is native to the southern United States.
Geographic range
The Pascagoula map turtle is restricted to the Pascagoula ...
s,
pancake tortoise
The pancake tortoise (''Malacochersus tornieri'') is a species of flat-shelled tortoise in the family Testudinidae. The species is native to Tanzania and Kenya. There are also small populations in northern Zambia. Its common name refers to the fl ...
s,
spider tortoise
The spider tortoise (''Pyxis arachnoides'') is a species of tortoise in the family Testudinidae that is endemic to Madagascar and is one of only two species in the genus ''Pyxis''.
Habitat
The remaining tortoises are found only in south western ...
s,
poison dart frog
Poison dart frog (also known as dart-poison frog, poison frog or formerly known as poison arrow frog) is the common name of a group of frogs in the family Dendrobatidae which are native to tropical Central and South America. These species are ...
s,
Titicaca water frog
''Telmatobius culeus'', commonly known as the Titicaca water frog or Lake Titicaca frog, is a medium-large to very large and endangered species of frog in the family Telmatobiidae. It is entirely aquatic and found only in the Lake Titicaca basi ...
s,
hellbender
The hellbender (''Cryptobranchus alleganiensis''), also known as the hellbender salamander, is a species of aquatic giant salamander endemic to the eastern and central United States. It is the largest salamander in North America. A member of the ...
s,
black rat snake Black rat snake may refer to:
*'' Pantherophis alleghaniensis'', the eastern ratsnake
* '' Pantherophis spiloides'', the central ratsnake
*'' Pantherophis obsoletus'', the western ratsnake
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