Spain
5 buildings
Guggenheim Museum Bilbao
Designed by Frank Gehry using titanium panels. The titanium skin covers 33,000 square mete...
Sagrada Familia
Designed by Antoni Gaudi, still unfinished after 140 years. Scheduled completion is 2026. ...
Alhambra
The last major Islamic stronghold in Spain. Over 2 million visitors annually. The muqarnas...
Roman Aqueduct of Segovia
Over 2,400 feet long with 167 arches. Reaches 93 feet at its tallest point. Built without ...
Mezquita of Cordoba
The Great Mosque of Cordoba, later converted into a cathedral. Its forest of 856 columns o...