Basilica de la Sagrada Familia

The Sagrada Familia commenced construction in 1882 and is due to be finished by 2026 (that's Spanish construction for you). The completion is designed to align with the 100 year anniversary of Gaudi's death.

Gaudí’s conception of the Sagrada Familia was based on the traditions of Gothic and Byzantinecathedrals. His intention was to express Christian belief through the architecture and the beauty of the building and communicate the message of the Evangelists. He achieved a symbiosis between formand Christian iconography, with a personal architecture generated via new but thoroughly logical structures, forms and geometries inspired by nature, with light and colour also playing a central role.

Barcelona

Orginally founded as a Roman city, Barcelona is the capital city of the autonomous community of Catalonia in Spain and Spain's second most populated city, with a population of 1.6 million although if you count it's extended urban area that population swells to around 4.7 million. It's the 7th most populous area in the Europen Union after Paris, London, Madrid, the Ruhr area, Berlin, and Milan.

It's particularly known for the architecture of Antoni Gaudi and for hosting the 1992 Summer Olympics.

Casa Batilo (Gaudi design)

Called the Smiling Lobster (for obvious reasons)

Basilica San Juan de Dios, Granada