CaixaForum
The building itself, a restored textile factory, is well worth exploring (and is directly across from the Mies van der Rohe Pavilion on Montjuïc at the bottom of the steps up to the Palau Nacional). Temporary exhibits show the work of major artists from around the world, while the auditorium (and sometimes the outdoor area) hosts a regular program of world-music concerts, theater, and performance art. There are also regular workshops and special events for families.