Visit La Sagrada Familia
Going to Barcelona and failing to visit La Sagrada Familia is like going to Paris and not stopping at the Eiffel Tower. This gorgeous, unique-looking church was built from 1882 to 1926 by a Spanish architect. The view is (arguably) even better inside where the sun beams in and the glass windows reflect every color of the rainbow. Wander around this famous Barcelona site on your own or with a guided tour.