If you're looking for something a bit different, head over to Photographic Archive of Barcelona. You'll find all kinds of entertainment at this wonderful exhibition space.
You'll soon learn why this Downtown Barcelona exhibition space is a hit with travelers. If you're looking for other things to keep you busy, Sagrada Familia, La Rambla, and Plaça de Catalunya are in this area too. They won't take very long to reach from Photographic Archive of Barcelona.