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
Barcelona - Ceiling of the Sagrada Familia, Spain. The columns of the interior are a unique Gaudí design. Besides branching to support their load, their ever-changing surfaces are the result of the intersection of various geometric forms.