The Vall de Boí, southwest of Parc Nacional d’Aigüestortes i Estany de Sant Maurici, is dotted with some of Catalonia’s loveliest Romanesque churches – unadorned stone structures sitting in the crisp alpine air. Together these 11th- to 14th-century constructions were declared a Unesco World Heritage site in 2000. Kick-start your architectural odyssey with a visit to this interpretation centre. There is a small art collection, you can organise guided church tours, and it's a handy place to buy combined tickets (three churches for €7).
Two of the finest churches are in Taüll, 3km east of Boí. Other worthwhile Romanesque churches are at Barruera (Sant Feliu) and Durro (Nativitat).
