Sagrada Família Basicala, Barcelona

The Church of the Holy Family is the largest church in Barcelona, and probably one of the longest construction projects in the world.   Designed by famed Catalan (the region in Spain where Barcelona is located) Antoni Gaudi, work started in 1882 and there still working..    They hope to have it completed by 2026!   This is must place to visit if you are in Barcelona, it's not like any other church I have ever seen.