La Sagrada Familia

....the Sagrada Familia church which would play a role in intensifying Gaudi's deep religiosity, and finally his exclusive dedication to resolving the problems which arose in putting his own architecture into practice. From the time he began to work on it, in 1884, he dedicated more and more time to it to the point that he stopped accepting other work in 1908 and worked on it up until his sudden death in 1926. The church, still under construction 115 years after work was begun, has since become one of Barcelona's most noteworthy landmarks.