It’s one of the city’s most exclusive cultural experiences and can be experienced annually on the initiative of the Museum of Lisbon. The Roman Galleries at Rua da Prata are open for four days and reveal the structure discovered underground in downtown Lisbon in 1771, following the 1755 earthquake. It is a cryptoporticus, an architectural solution that created a horizontal platform to support the construction of large buildings, usually public ones, in a sloping area with little geological stability.
At the beginning of the 20th century, these galleries became known as Conservas de Água da Rua da Prata, because they were used by the population as cisterns. When they are closed, they have a water level of more than a metre high, coming from groundwater that runs underground in Lisbon, so it is necessary to pump out the water in order to access the interior.
On the day of the visit, you should arrive at the meeting point 15 minutes in advance and be in possession of an access ticket; Visits are not recommended for people with reduced mobility; Visits take place in groups and last 20/25 minutes.
Visitors should bring waterproof footwear and comfortable clothing.
21 SEP 2023 – 15H00-18H30
22 SEP 2023 – 15H00-18H30
23 SEP 2023 – 09H30-18H30
24 SEP 2023 – 09H30-18H30
