Enjoy a complete tour in Barcelona and visit the popular Park Guell and the famous Cathedral of the Sagrada Familia in Barcelona. La Sagrada Familia is one of Gaudí's most famous works in Barcelona. It's a giant Basilica that has been under construction since 1882 and it's not expected to be completed for some time yet. The Park Güell originated in 1900, when Count Eusebi Güell bought a tree-covered hillside (then outside Barcelona) and hired Gaudí to create a miniature city of houses for the wealthy in landscaped grounds. .