Sagrada Familia is a massive, privately-funded Roman Catholic church that has been under construction in Barcelona since 1882
and is not expected to be complete until at least 2026. Considered the masterwork of renowned Catalan architect
Antoni Gaudí (1852–1926), the project's vast scale and idiosyncratic design have made it one of Barcelona's
and Spain's top tourist attractions for many years.

The images here show the front, side, and rear facades. For a thorough article on
Sagrada Familia, see
http://en.wikipedia.org/wiki/Sagrada_Familia .
Clicking on the first image in this article produces a superb view of the entire structure.