The Roman Theatre of

Felicitas Iulia Olisipo was an emblematic building, with capacity for 4 thousand spectators, constructed with local resources and raw materials, constituting the highest exponent and mark of Roman power in the urban fabric. In

Felicitas Iulia Olisipo, this mark was magnificent: those arriving in the city by boat, in the Tagus, could look towards the hill where much later the São Jorge Castle would be built and behold the semicircle of a large theatre. In 1798, the ruins were rediscovered, during the renovation of this urban area, but buried once again. The first archaeological work began in the 1960s, with the identification of several central details: the

hyposcaenium, the

orchestra, the

imma cavea, the eastern

aditus. In the 80s and 90s, archaeologists identified one of the

vomitoria. The museum was inaugurated in 2001, but renovation between 2013 and 2015 allowed the identification of new areas of the theatre, such as the

post scaenium. The architectural and decorative elements and the archaeological objects analysed at the time helped to confirm the Theatre dates to the principality of Augustus. In addition to the museum exhibit, with objects from the archaeological excavation at the location, an important part of the theatre can also be visited.