Installed in the old episcopal palace, the National Museum of Machado de Castro owes its name to the royal sculptor, Joaquim Machado de Castro, a native of this city. The building, classified as a National Monument, was the object of a complex intervention program, which covered several areas, from architecture, archeology and museography, and the requalification project by the architect Gonçalo Byrne received the international prize Piranesi /Prix de Rome. Among its main attractions are the trace elements of a cloister of the twelfth century and a cryptoportico of the first century, an important Roman construction conserved in Portugal.