The Roman Theater is one of the few visible remains of Roman rule in Portugal. It is located within the Old Town, at the foot of the hill on which St. George's Castle rises. It is now part of the Lisbon Museum.
The theater was built in the 1st century BC on the order of Emperor Augustus. It was enlarged in the middle of the first century to 5,000 seats. Performances, gladiatorial fights and fights with wild animals imported from North Africa took place here.
The remains of the theater disappeared underground during the reconstruction of Lisbon after a major earthquake in the mid-eighteenth century. They were found only in the 20th century. In the Museum you can see the remains of the buildings, including columns, stage and some fan-shaped seating. Visitors can use audioguids with the recorded description and history of the building.