Complutum was an
ancient Roman
In modern historiography, ancient Rome is the Roman people, Roman civilisation from the founding of Rome, founding of the Italian city of Rome in the 8th century BC to the Fall of the Western Roman Empire, collapse of the Western Roman Em ...
city located in the present-day city of
Alcalá de Henares
Alcalá de Henares () is a Spanish municipality of the Community of Madrid. Housing is primarily located on the right (north) bank of the Henares River, Henares. , it has a population of 193,751, making it the region's third-most populated Municip ...
, Spain. It has been partially excavated and the impressive remains can be seen today at the Complutum archaeological site south west of the current city, about a kilometre from the medieval centre.
History

The town grew up at a favourable site near the junction of several communication routes and near natural resources, such as the Henares river and the arable meadows around it.
It was a town of the
Celtiberian Carpetani
The Carpetani ( Greek: ''Karpetanoi''), also named ''Karpesioi'' by Polybius, were one of the Celtic peoples inhabiting the Iberian Peninsula prior to the Roman conquest. Their core domain was constituted by the lands between the Tagus and the ...
tribe in the 3rd and 2nd centuries BC whose hill fort (''
oppidum
An ''oppidum'' (: ''oppida'') is a large fortified Iron Age Europe, Iron Age settlement or town. ''Oppida'' are primarily associated with the Celts, Celtic late La Tène culture, emerging during the 2nd and 1st centuries BC, spread acros ...
'') occupied the Viso Hill nearby on the far side of the Henares river at a defensive position.
After the Roman conquest in the first century BC there was a first, unsuccessful city project on the same site but soon afterwards the citizens themselves chose to build a new city in the fertile valley of the Henares. This major project was in two stages, first under
Augustus
Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in A ...
and then under
Claudius
Tiberius Claudius Caesar Augustus Germanicus ( ; ; 1 August 10 BC – 13 October AD 54), or Claudius, was a Roman emperor, ruling from AD 41 to 54. A member of the Julio-Claudian dynasty, Claudius was born to Nero Claudius Drusus, Drusus and Ant ...
(around 50 AD). In 74 AD
Vespasian
Vespasian (; ; 17 November AD 9 – 23 June 79) was Roman emperor from 69 to 79. The last emperor to reign in the Year of the Four Emperors, he founded the Flavian dynasty, which ruled the Empire for 27 years. His fiscal reforms and consolida ...
gave the city the status of ''
municipium
In ancient Rome, the Latin term (: ) referred to a town or city. Etymologically, the was a social contract among ('duty holders'), or citizens of the town. The duties () were a communal obligation assumed by the in exchange for the privileges ...
''. It became the main urban centre and capital of a vast political territory, covering most of the current region of Madrid and Guadalajara.
The city was greatly enhanced in the 3rd century, despite the crisis that the empire experienced from then until its fall in the 5th.
During the
Diocletian
Diocletian ( ; ; ; 242/245 – 311/312), nicknamed Jovius, was Roman emperor from 284 until his abdication in 305. He was born Diocles to a family of low status in the Roman province of Dalmatia (Roman province), Dalmatia. As with other Illyri ...
persecutions (r. 284–305) two young brothers (Justus was 13 years old, Pastor less than 9) were killed as Christian martyrs and are today the patron saints of Alcalá.
During the
Visigothic
The Visigoths (; ) were a Germanic people united under the rule of a king and living within the Roman Empire during late antiquity. The Visigoths first appeared in the Balkans, as a Roman-allied barbarian military group united under the comman ...
period, an important road ran south from Complutum to the Mediterranean and north to Gaul.
The absence of archaeological legislation in the 19th century led to many objects being taken and sold. About half of Complutum was destroyed between 1970 and 1974 with the construction of the Reyes Católicos suburb.
In 1985 the Spanish Historical Heritage Law was approved, and the first scientific and regulated campaigns were carried out between 1985 and 1990, and again in 2003.
The Site

The limits of the city are known since archaeological surveys were carried out when the adjoining buildings were built. As in almost all the cities that were founded or rebuilt from the first century BC, the Romans used a Greek-inspired
Hippodamian orthogonal grid of streets.
Complutum was built in two main sections: an older one to the east, built in the 20–30s AD, where the ''
insulae'' are rectangular, approximately 32 × 42 m, and another to the west, from the 60s AD, with square insulae of 32 × 32 m.
15 ''
decumani'' and 16 ''
cardines'' were traced, occupying an approximate area of 48 hectares that housed 10,000 to 15,000 inhabitants in its heyday before the crisis of the 3rd century. The two main avenues, the ''cardo maximus'' and the ''decumanus maximus'', intersected at the
forum with the commercial areas, the main public and religious buildings, and the houses of the most important citizens.
The ''decumanus maximus'' is the most important street, because it was the road from
Emerita Augusta
Augusta Emerita, also called Emerita Augusta, was a Roman '' colonia'' founded in 25 BC in present day Mérida, Spain. The city was founded by Roman Emperor Augustus to resettle Emeriti soldiers from the veteran legions of the Cantabrian Wars ...
(Mérida) and
Toletum (Toledo) to CaesarAugusta (
Zaragoza
Zaragoza (), traditionally known in English as Saragossa ( ), is the capital city of the province of Zaragoza and of the autonomous communities of Spain, autonomous community of Aragon, Spain. It lies by the Ebro river and its tributaries, the ...
). Beside the road at the western gate was a fountain where nymphs and the goddess Diana were venerated, known today as Fuente del Juncal. At the southern end of the ''cardo maximus'', on the banks of the Henares, another spring performed a similar function, the so-called ''de la Salud'', in what was then a small river port.
Forum complex

The monumental forum complex of the 3rd century included a
basilica
In Ancient Roman architecture, a basilica (Greek Basiliké) was a large public building with multiple functions that was typically built alongside the town's forum. The basilica was in the Latin West equivalent to a stoa in the Greek Eas ...
, a
curia
Curia (: curiae) in ancient Rome referred to one of the original groupings of the citizenry, eventually numbering 30, and later every Roman citizen was presumed to belong to one. While they originally probably had wider powers, they came to meet ...
, baths and two porticos with numerous shops (''
tabernae''). It was built over an earlier forum and buildings from the 1st century.
A monumental façade adorned the forum, a high stone wall with large columns imitating the stage fronts of a theatre, covered in marble, topped with sculptures, and in the central opening a poetic inscription, a ''
Carmen
''Carmen'' () is an opera in four acts by the French composer Georges Bizet. The libretto was written by Henri Meilhac and Ludovic Halévy, based on the novella of the same title by Prosper Mérimée. The opera was first performed by the O ...
Epigraphicum'' (based on
Virgil
Publius Vergilius Maro (; 15 October 70 BC21 September 19 BC), usually called Virgil or Vergil ( ) in English, was an ancient Rome, ancient Roman poet of the Augustan literature (ancient Rome), Augustan period. He composed three of the most fa ...
's
Aeneid
The ''Aeneid'' ( ; or ) is a Latin Epic poetry, epic poem that tells the legendary story of Aeneas, a Troy, Trojan who fled the Trojan War#Sack of Troy, fall of Troy and travelled to Italy, where he became the ancestor of the Ancient Rome ...
) that commemorated the renovation of the forum at the end of the 3rd century. The ''
cryptoporticus'' was built to raise the floor and provide a more impressive facade and monumental entrance to the curia. To build this it was also necessary to demolish the east wing of the
quadriporticus
This page is a glossary of architecture.
A
B
C
The Caryatid Porch of the Athen ...
which until then had stood beside the baths. It stands above an aqueduct that supplied the north baths and therefore lost its original function.
The basilica was one of the most important places in the city as courts of justice and office of commercial agreements. It was built in the 3rd century over an earlier basilica and the north baths. The building had a central nave with a surrounding corridor, separated by a row of columns.
The north baths of the 1st century were attached to the early basilica. The ''
caldarium
image:Caldarium.JPG, 230px, ''Caldarium'' from the Roman baths at Bath, Somerset, Bath, England. The floor has been removed to reveal the empty space where the hot air flowed through to heat the floor.
A (also called a ''calidarium'', ''cella ca ...
'' consisted of a large heated room with ''
opus signinum'' floor over a
hypocaust
A hypocaust () is a system of central heating in a building that produces and circulates hot air below the floor of a room, and may also warm the walls with a series of pipes through which the hot air passes. This air can warm the upper floors a ...
whose heat was produced in a ''praefurnium'' of two large ovens located to the south. An apse on the south side included a hot water pool above which windows made the most of the sun. At the end of the 3rd century the baths were transformed into the curia, the meeting place of the senate. The hypocaust heating system was preserved to serve the senate members.
The curia was where the Paredón del Milagro (miracle wall) was situated, an object of Christian worship throughout the centuries, since tradition places the martyrdom of Saints
Justus and Pastor on this wall, although it was probably here that the sentence was passed but was executed in the Campo Laudable just outside Complutum.
The southern baths were built at this time to replace the north baths. They were smaller than the earlier baths but, to maximise their size, the Decumanus IV was built over. Their layout was of a simpler linear provincial type with a succession of four heated environments: first, facing north, the ''
apodyterium
In ancient Rome, the ''apodyterium'' (from , "undressing room") was the primary entry in the public baths, composed of a large changing room with cubicles or shelves where citizens could store clothing and other belongings while bathing.PBS https: ...
'' (changing room), second the ''
frigidarium
A ''frigidarium'' is one of the three main bath chambers of a Roman bath or ''thermae'', namely the cold room. It often contains a swimming pool.
The succession of bathing activities in the ''thermae'' is not known with certainty, but it is tho ...
'' with a cold pool, then the ''
tepidarium
The ''tepidarium'' was the warm (''tepidus'') bathroom of the thermae, Roman baths heated by a hypocaust or underfloor heating system. The speciality of a ''tepidarium'' is the pleasant feeling of constant radiant heat, which directly affects the ...
'' and finally the ''
caldarium
image:Caldarium.JPG, 230px, ''Caldarium'' from the Roman baths at Bath, Somerset, Bath, England. The floor has been removed to reveal the empty space where the hot air flowed through to heat the floor.
A (also called a ''calidarium'', ''cella ca ...
'' to make the most of the sun. The heated hypocaust with ''praefurnium'' remains in place for the last two rooms.
''Auguraculum''
Located next to the forum, the ''
auguraculum'' is an unusual public building: the ''
collegium
A (: ) or college was any association in ancient Rome that Corporation, acted as a Legal person, legal entity. Such associations could be civil or religious.
The word literally means "society", from ("colleague"). They functioned as social cl ...
'' of the
augur
An augur was a priest and official in the ancient Rome, classical Roman world. His main role was the practice of augury, the interpretation of the will of the List of Roman deities, gods by studying events he observed within a predetermined s ...
s (the priests who celebrate the rituals of divination and other purifying offerings), regulating religious lives of citizens and public activity.
The main hall had two offering wells and six small sacrifice reservoirs, each containing a ceramic jug and remains of one or more sacrificial animals (mostly chicken). In another room, another reservoir with a buried child was found and remains of weighing instruments and a statuette of Mercury, messenger of the gods and god of commerce.
House of Griffins
150px, Fresco of room E, House of the Griffins
In the centre of the city is the House of the Griffins, built in the middle of the 1st century and in use until the 4th century, when it was destroyed by an accidental fire. It was one of the best ''
domus
In ancient Rome, the ''domus'' (: ''domūs'', genitive: ''domūs'' or ''domī'') was the type of town house occupied by the upper classes and some wealthy freedmen during the Republican and Imperial eras. It was found in almost all the ma ...
'' in the city, with unusual comforts (a fireplace in room F and a water storage and distribution system). It had a large area (900 m²), with a large inner courtyard (99 m²) surrounded by a
peristyle
In ancient Ancient Greek architecture, Greek and Ancient Roman architecture, Roman architecture, a peristyle (; ) is a continuous porch formed by a row of columns surrounding the perimeter of a building or a courtyard. ''Tetrastoön'' () is a rare ...
with twelve columns (two of them double) leading to a series of rooms. Wall paintings of all kinds have been found in them, among which some well-preserved ones stand out. Those on the west wall of room E, the ''
tablinum
In Roman architecture, a (or , from , board, picture) was a room in a ''domus'' (house) generally situated on one side of the atrium and opposite to the entrance; it opened in the rear onto the peristyle, with either a large window or only an a ...
'' of 48.6 m², the guests and clients reception room, are of the second
Pompeian style, in fashion during Hadrian's time (117-138). They represent a simulated architecture of 7.6 × 4.9 m with two
Ionic columns on a plinth that imitates marble panels, among which an elaborate yellow plinth supporting a framed flower in its centre stands out.
Other frescos include panels with plants or candelabra, ''
krater
A krater or crater (, ; , ) was a large two-handled type of vase in Pottery of ancient Greece, Ancient Greek pottery and metalwork, mostly used for the mixing of wine with water.
Form and function
At a Greek symposium, kraters were placed in ...
s'', fountains, ''
clipei'', ''
situlas'', and
cornucopia
In classical antiquity, the cornucopia (; ), also called the horn of plenty, was a symbol of abundance and nourishment, commonly a large horn-shaped container overflowing with produce, flowers, or nuts. In Greek, it was called the " horn of ...
s. In "room D" there is a floating human figure; in the south corridor a horseman in a hunting scene; and in room J a sun god, a triumphant swan (Jupiter metamorphosis), a naturalistic bird and the griffins that give the house its name. In the peristyle, wooden latticework and metal gates are imitated.
House of Hippolytus
150px, Mosaic in the House of Hippolytus
Although known as the House of Hippolytus, it was in fact the headquarters of the Youth College and all the rooms were related to leisure. The largest room has a large mosaic with a fishing scene. The work is signed by Hippolytus, a master mosaicist of possibly North African origin (present-day Tunisia is the most feasible place) and was made for one of the most important families in the city.
Other buildings

Other buildings stand out for their wealth of mosaics, such as that of the four seasons from the House of Bacchus, House of Cupids and House of Leda. The House of Mars is an atrium house built for a family unit. The atrium was without columns and the ''
impluvium
The ''impluvium'' (: ''impluvia'') is a water-catchment pool system meant to capture rain-water flowing from the ''compluvium'', an area of roof. Often placed in a courtyard, under an opening in the roof, and thus "inside", instead of "outside ...
'' in the centre collected rainwater and around it were situated all the rooms.
Villa of El Val
5 km to the east, in the village of El Val, was found a Roman villa. It is a large palatial complex with agricultural parts whose main use was breeding horses for chariot races (
auriga). Themes related to chariot races were repeated in the ornamentation of its main buildings, both in mural painting and in mosaics. A large mosaic stands out in particular, "The Victorious Charioteer", which occupied the large reception room of which some 90 m² have been recovered and restored. The mosaic is dated between late 3rd century to early 4th century AD. Its design is made up of a peripheral geometric design and a central emblem in which a charioteer is represented, with a winning gesture, on a horse-drawn chariot.
Villa romana de El Val. Lista Roja del Patrimonio Complutense. Una relación del Patrimonio Histórico en riesgo.
Grupo en Defensa del Patrimonio Complutense
The villa was developed in three phases: it was built in the first century AD and it was remodeled during the late 3rd century to early 4th century. When Christianised in the 5th century a basilica and a necropolis were added.
It was discovered in 1970 during work on the site, when a large part of the remains were destroyed. It was situated on the Camino de los Afligidos, a route that coincided with the hypothetical Roman road to Caesaraugusta.
It extended over 500x150m. The palatial residence was arranged around a semicircular peristyle. There was a large reception room and a funerary mausoleum with a cruciform plan. To the north and west, the façades were completed with circular and rectangular towers. In the south were private baths and a basilica. The complex also housed workshops, warehouses and stables.
Gallery
File:Habitación E Casa de los Grifos.JPG, Room E, House of the Griffins
File:Museo Arqueológico Regional de la Comunidad de Madrid en noviembre de 2021 13.jpg
File:Mosaico de Zeus y Leda.JPG, Mosaic of Zeus and Leda
File:Casa de Hippolytus 03.JPG, Latrines of House of Hippolytus with mosaic
References
{{Coord, 40, 28, 25, N, 03, 23, 03, W, type:landmark_region:ES-MD, display=title
Roman towns and cities in Spain
Roman sites in Spain
Populated places established in the 1st century