Chapel of the Royal Seat of La Florida, built on the instructions of King Carlos IV, with ceilings painted by Francisco de Goya in 1798. Since 1919 this chapel has contained the tomb of Francisco de Goya. To preserve its paintings the cult was move to a new symmetrical twin chapel built in 1928, leaving the original building as a museum.
Further information at Madrid Official Tourism Website.
A Crime is Afoot 