Check out avant-garde exhibits by international artists in this fascinating modern art museum in La Boca. It's inside a refurbished nineteenth-century home. There are four rotating exhibits taking in various twentieth-century genres, including photography, design, electronic music, and multimedia. This kind of art can sometimes be radical and tough to grasp, and Proa does an excellent job of making it accessible. There is also a specialized library, excellent bookstore, and a lovely rooftop restaurant overlooking the harbor. English-language tours are available, but must be booked 48 hours in advance.