Spanish banks vie with one another to offer the best exhibitions in their private galleries. If you’re going to see just one, check out the Caixa Forum, owned by La Caixa bank and offering more than 2,500 square meters of exhibition space. Exhibitions range from cutting-edge contemporary art to traditional retrospectives, plus there are films, a cool cafeteria and an excellent gift shop for those arty friends back home. Avoid the first days of any new exhibition as they’re insufferably crowded. The staircase is too narrow for the crowds and gets bottlenecked on a regular basis. The wall of the building next to the entrance is covered in a multistory vertical garden that blooms into a riot of color every spring.