Capella Reial de Santa Àgata (14th century): The base of the chapel is part of the wall of the old Roman city Barcino (4 a.d.)
This building is the chapel of Palau Reial Major on Plaça del Rei. The plaza and part of the chapel are seen in the previous photo.
This photo was taken from Plaça de Ramón Berenguer el Gran.
