From across the city, the bombastic neoclassical silhouette of the Palau Nacional can be seen on the slopes of Montjuïc. Built for the 1929 World Exhibition, it houses a vast collection of mostly Catalan art spanning the early Middle Ages to the early 20th century. The Romanesque frescoes — painstakingly removed from crumbling Pyrenean churches — are extraordinary, rivalling any collection in Europe.