Alcala de Henares originated as Complutum, a Roman city founded in the 1st century BC near a pre-Roman Carpetanian settlement called Iplacea. With around 10,000 inhabitants, it achieved the rank of municipium and sat on the road linking Emerita Augusta to Caesaraugusta. The 3rd-century forum complex included a basilica, curia, baths, and porticoed shops. The House of Hippolytus, one of the few known Roman youth colleges in Hispania, dates to the 3rd-4th centuries AD. The name Alcala derives from the Arabic al-qala (fortress).
Alcalá de Henares

| Type | City/town/settlement |
|---|---|
| Period | 500 BC - 1 AD |
| Country | Spain |
| Coordinates | 40.4668° N, 3.3667° W |
Spain