At the foot of the Bastille lies the former Romanesque Saint-Laurent church, built on the remains of a Gallo-Roman necropolis. The church was originally deconsecrated in 1983 to become an archaeological dig; in 1986 it became a museum. A huge renovation finishing in 2011 turned the museum into the impressive sight it is today. Upon entering, visitors stand on a platform high above the restored remains of the nave, with colored illuminations to show which section of the building was built during each of the many phases of construction and renovation, dating from the early Middle Ages through to the 19th century. The centerpiece of the museum is the crypt which dates from the original construction of the 6th century cruciform funerary church.