La Sagrada Familia, Spain - is a cathedral still under construction in Barcelona. Work on the cathedral started in 1882 and Gaudi himself worked on it for 40 years, 15 of which he dedicated exclusively to it, until his death in
Cologne Cathedral is a Roman Catholic cathedral in Cologne, Germany. It is the seat of the Archbishop of Cologne and of the administration of the Archdiocese of Cologne. Built in The cathedral's height is 516 feet.