Santa Eulàlia has one of the best bell-towers in the Vall de Boí. It is slender, square in plan and six storeys high and is decorated in the Lombard Romanesque style with rounded arcading and saw-tooth friezes .
Aligned with the bell-tower of Sant Joan in Boí and that of Sant Climent in Taüll, it was used for communications and as a watchtower over the area.
Inside the church there is a copy of the sculpture of the Descent from the Cross , the only whole sculpture remaining from the Erill Workshop. The originals are kept in two museums: the National Museum of Catalan Art in Barcelona and the Episcopal Museum of Vic.