This room explains the building constructive history through four recreations that show how the block where the museum is situated has changed since the Roman period. Besides explanatory images, it is exhibited an archaeological garden with architectonical remains from different periods, which were found in building restorations works as filler in some of its walls.
With these images and timeline it is understood how the growth of this building has been regulating and organizing the surrounding urban area, underlying three locations: main access to the city through the Stone bridge, river Ebro promenade, and la Seo square where the access to the cathedral has been situated since Modern period.