Located in the building of the old prison, built in 1844, facing the Town Hall Palace, this museum has a remarkable archeology collection that signals the presence of man in the region from the paleolithic age. A special note to Miróbriga, an important roman city, that occupies a special place in this museum.

The Municipal Library of Santiago do Cacém, equipped in a modern and functional way. It has quality and up to date equipments and documents.

A space with resources and information services that, besides helping in several daily activities of the common citizen, provides relaxing leisure moments. The Library has a space destined for adults, with a newspapers area, an infantile/juvenile area, a room where several musical performances, theatrical exhibitions and even conferences take place and photocopies and printing space.