The strangest sight of Faro, which is hidden away from the main tourist route, is the Capela Dos Ossos, the bone chapel. The bones of the overcrowded cemeteries were stored in the small chapel that is located within the Carmo church complex. These bones were incorporated into the designs of the chapel, with skulls lining the walls – very strange and creepy. http://www.algarve-tourist.com/Faro-portugal-guide.html

The bone chapel is the most ghoulish sight of Portugal and thus one of the most memorable monuments of Evora. Inside the small chapel, the walls are lined with bones of the long-deceased, exhumed from the city's graves as the city expanded to allow further burials. http://www.evora-portugal.com/Guides/Evora-sights-attractions-sightseeing-things-to-see.html