
Osu Castle (also known as Fort Christiansborg or the Castle) is a castle located in
Osu,
Ghana
Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in Ghana–Ivory Coast border, the west, Burkina ...
on the coast of the
Gulf of Guinea in Africa.
A substantial
fort
A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ...
was built by
Denmark-Norway in the 1660s, thereafter the fort changed ownership between Denmark-Norway,
Portugal
Portugal, officially the Portuguese Republic, In recognized minority languages of Portugal:
:* mwl, República Pertuesa is a country located on the Iberian Peninsula, in Southwestern Europe, and whose territory also includes the Macaronesian ...
, the
Akwamu,
Britain, and finally post-Independence
Ghana
Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in Ghana–Ivory Coast border, the west, Burkina ...
. Under Denmark–Norway control it was the capital of the
Danish Gold Coast, and held and dispatched enslaved people overseas.
In 1902, Osu Castle became the
seat of government in Ghana but this has now moved to
Golden Jubilee House.
[ghanacastle.gov.gh](_blank)
Because of its testimony to European colonial influence in West Africa and the
Atlantic slave trade
The Atlantic slave trade, transatlantic slave trade, or Euro-American slave trade involved the transportation by slave traders of enslaved African people, mainly to the Americas. The slave trade regularly used the triangular trade route and ...
, the castle was inscribed on the
UNESCO
The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. I ...
World Heritage List in 1979 along with several
other castles and forts in Ghana.
History

The area was first occupied in 1550 by the
Portuguese, though in the 17th century Portuguese influence diminished. The area came under the control of
Sweden in the 1650s, led by the German trader
Heinrich Carloff. In 1652, he was given permission to build a small fortified lodge by the King of Accra, with whom he had previously done business. In 1660, control passed to the
Netherlands
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, subdivision_name = Kingdom of the Netherlands
, established_title = Before independence
, established_date = Spanish Netherl ...
but it was soon lost to
Denmark-Norway. In 1657, Carloff had again traveled to
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...
, this time representing Denmark-Norway. He aimed to conquer the forts he had previously established, which he found easy at Osu. In its early life, the castle was primarily used in the
gold
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile ...
and
ivory trade, but under Dano-Norwegian control it increasingly dealt with
slaves.

Osu Castle was located close to two other forts.
Fort Crèvecœur
A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''face ...
was controlled by the Dutch and
Fort James by the British. The settlement at Osu was too small to store sufficient goods to compete with the others. Consequently, Denmark-Norway purchased adjoining land and expanded the building, naming it Fort Christiansborg after the reigning Danish King
Christian V.
This is not to be confused with the slightly later
royal palace in Copenhagen. Denmark-Norway would occupy the fort for most of the next 200 years, with some interruptions, and for much of that time it served as the capital of the
Gold Coast of Denmark-Norway.
[worldstatesmen.org "Ghana"](_blank)
World Statesmen.org.]
In 1679 or 1680, the fort's
Greeks, Greek assistant commander incited a
mutiny to murder the commander. Shortly after that, a Portuguese ship commanded by Julião de Campos Barreto visited the fort and agreed to purchase it. The fort was named Fort
São Francisco Xavier after the
Catholic
The Catholic Church, also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.3 billion baptized Catholics Catholic Church by country, worldwide . It is am ...
missionary
Francis Xavier
Francis Xavier (born Francisco de Jasso y Azpilicueta; Latin: ''Franciscus Xaverius''; Basque: ''Frantzisko Xabierkoa''; French: ''François Xavier''; Spanish: ''Francisco Javier''; Portuguese: ''Francisco Xavier''; 7 April 15063 December ...
. The Portuguese built a
chapel
A chapel is a Christian place of prayer and worship that is usually relatively small. The term has several meanings. Firstly, smaller spaces inside a church that have their own altar are often called chapels; the Lady chapel is a common typ ...
and raised the
bastion
A bastion or bulwark is a structure projecting outward from the curtain wall of a fortification, most commonly angular in shape and positioned at the corners of the fort. The fully developed bastion consists of two faces and two flanks, with fi ...
s by three feet. The fort was abandoned on 29 August 1682 after the
garrison mutinied and it became clear that
Portuguese traders could not compete with the other Gold Coast powers. Danish forces returned in February 1683 after purchasing the fort back from the Portuguese. In 1685, Fort Christiansborg became the capital of the Gold Coast of Denmark-Norway, taking over from
Fort Frederiksborg.
[van Dantzig and Priddy, p. 22.]
The
Akwamu ethnic group occupied the fort in 1693 after overpowering the occupants (who were reduced by death and disease) while disguised as merchants. Assameni, the Akwamu leader, occupied the fort for a year, trading with merchants from many nations. In 1694, Assameni sold the fort back to Denmark-Norway for 50
marks of gold (400 troy ounces, worth £200,000 to £250,000 in 2008) but retained the keys, which are still in the ethnic group's possession to this day.
The early 18th century was not kind to the fort, and in 1722 the English reported it to be in disrepair. Extensions were made later that century, however, and structural improvements were made in 1824. The additional store rooms, garrison quarters, platforms, bastions and houses resulted in the castle being four times the size of the original fort.
[van Dantzig and Priddy, p. 24.] In the 1770s, the Danes at Osu became involved in a conflict with Dutch-controlled Accra.
In 1850, the British bought all of Denmark's
Gold Coast possessions for
£10,000 (between £850,000 and £1.5m in 2007), including Fort Christiansborg. Denmark had been considering selling these outposts for some time. After the slave trade had been
abolished they were expensive to run and brought little benefit.
Britain experienced the same problems, but was keen to prevent illegal slave trading and
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...
or
Belgium
Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to ...
strengthening in the area. An earthquake in 1862 destroyed most of the upper floors, which were rebuilt in wood. Later that century, the castle became the seat of the colonial government. It was abandoned by the British colonial powers from 1890 to 1901. Within this period, it was used as a constabulary mess and later a
psychiatric asylum. It became the seat of government again in 1902. In 1950, the wooden upper floors were rebuilt according to the original Danish plans.
In 1957, when Ghana became independent, with
Queen Elizabeth II
Elizabeth II (Elizabeth Alexandra Mary; 21 April 1926 – 8 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until her death in 2022. She was queen regnant of 32 sovereign states during ...
as head of state, the fort became Government House, the residence of the
Governor-General
Governor-general (plural ''governors-general''), or governor general (plural ''governors general''), is the title of an office-holder. In the context of governors-general and former British colonies, governors-general are appointed as viceroy t ...
. When Ghana became a
republic in 1960, it became the residence of Ghana's first president,
Kwame Nkrumah.
In 2005, there was debate over whether Osu Castle should be replaced as the seat of government. President
John Kufuor argued that his government should not sit at the castle due to its previous association with slavery and also because its facilities were inadequate.
National Democratic Congress MPs, however, argued that the $50 m that a new presidential palace would cost would be better spent elsewhere.
Features

Osu Castle is no longer the seat of government. The seat of government is now the
Jubilee House. This name is now gazetted after being changed from its former name,
The Flagstaff House
Golden Jubilee House, or Jubilee House, is the presidential palace in Accra that serves as a residence and office to the President of Ghana. Jubilee House is built on the site of a building that was constructed and used for administrative pu ...
. Many international dignitaries have visited the castle while in the region, including U.S. Presidents
Richard Nixon
Richard Milhous Nixon (January 9, 1913April 22, 1994) was the 37th president of the United States, serving from 1969 to 1974. A member of the Republican Party, he previously served as a representative and senator from California and was t ...
,
Bill Clinton
William Jefferson Clinton (Birth name, né Blythe III; born August 19, 1946) is an American politician who served as the 42nd president of the United States from 1993 to 2001. He previously served as governor of Arkansas from 1979 to 1981 ...
,
Barack Obama
Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party (United States), Democratic Party, Obama was the first Af ...
and German Chancellor
Gerhard Schröder. Additional rooms were built in order to accommodate
Queen Elizabeth II
Elizabeth II (Elizabeth Alexandra Mary; 21 April 1926 – 8 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until her death in 2022. She was queen regnant of 32 sovereign states during ...
's visit in 1961, one year after Ghana became a republic.
The present castle is made up of various extensions to the original and is thus in an unorthodox shape. It has many facilities for the use of employees, including a clinic, café, shopping centre and a post office. It also still accommodates a permanent garrison. The extensive gardens feature a wide variety of plants, both local and imported, and employ 30 people. They are used for the president's outdoor receptions and parties.
The Castle is closed to walk-in visitors.
Controversies
In 2007, the opposition
Ministers of Parliament (MPs) in
Ghana
Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in Ghana–Ivory Coast border, the west, Burkina ...
(the
National Democratic Congress, NDC) stormed out of a parliamentary debate on whether to take out a $50m loan to build a new presidential palace. MPs from
President John Agyekum Kufuor's
New Patriotic Party voted unanimously in favour of taking the loan from
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
. They argued that the president should not be based in Osu Castle, where slaves used to be kept.
The opposition
National Democratic Congress said the money would be better spent such as improving the
economy
An economy is an area of the production, distribution and trade, as well as consumption of goods and services. In general, it is defined as a social domain that emphasize the practices, discourses, and material expressions associated with t ...
and helping promote the
Better Ghana Agenda. This led to the then general secretary to the opposition
NDC to describe the new
Flagstaff House as a "hen coop only fit for rearing chicken". The old
Flagstaff House used by Ghana's first president as his residence is being renovated into a museum, with the grounds on which it stands being built up as an ultra-modern office complex and residence for the president and vice-president of Ghana as well as their staff.
Gallery
File:Osu Castle 3.jpg, alt=, Osu Castle, also known as Fort Christiansborg is a castle located in Accra.
File:Osu Castle 1.jpg, alt=, Osu Castle, also known as Fort Christiansborg is a castle located in Accra.
File:Osu Castle 2.jpg, alt=, Osu Castle, also known as Fort Christiansborg is a castle located in Accra.
File:The Osu Castle.jpg, alt=, Christianborg Castle, Ghana
File:Christianborg castle 5.jpg, Christianborg Castle, Ghana
File:Christianborg castle 9.jpg, Christianborg Castle, Ghana
References
Sources
*Albert van Dantzig and Barbara Priddy, ''A Short History of the Forts and Castles of Ghana'' (Accra: Liberty Press, 1971).
External links
Ghana Museums and Monuments Board
{{Coord, 5, 32, 49, N, 0, 10, 57, W, region:GH-AA_type:landmark_source:dewiki, display=title
Buildings and structures completed in the 17th century
Castles in Ghana
Government buildings in Ghana
Government Houses of the British Empire and Commonwealth
Former Danish colonies
Presidential residences
1550 establishments in the Portuguese Empire