The Vall de Boí is a township formed by eight small towns with a population of between 9 and 200 habitants. Its landscapes of high mountains and the extreme climate contributed to the isolation of the valley for many centuries. This fact, along with the character of its people, customs and traditions, and its economic activity, based on centuries in subsistence livestock, have managed to preserve almost intact the territory and its natural and cultural riches.
The main attractions of the valley are the National Park of Aigüestortes and Estany de Sant Maurici, the spa of Caldes de Boí, the ski slopes of Boí Taüll Resort, and the set of Romanic churches declared World Heritage by the UNESCO.
Romanic art has always been well known in Catalonia and it is in the Vall de Boí where we find the most relevant samples, one of the most important Romanesque art collections in Europe. In 2000, Unesco declared a World Heritage Site the group of nine Romanic churches in the Valley: Assumpció del Coll, Sant Joan de Boí, Sant Climent de Taüll, Santa Maria de Taüll, Sant Feliu de Barruera, church of the Nativity of Durro, Sant Quirc de Durro, Santa Eulàlia d'Erill la Vall and Santa Maria de Cardet. Many of the paintings and other art objects of these churches are found at the National Art Museum of Catalonia.