Erill la Vall is located on a plateau, bordered by a set of rocky ridges. Medieval

In the heart of the village stands the 11th-century Church of Santa Eulàlia, featuring one of the best bell towers in the valley—an elegant square-plan tower with six stories, displaying Lombard architectural features. Inside, visitors can find a copy of the sculptural group of the Descent from the Cross, the only complete surviving work from the Erill workshop. Like the other churches in the valley, it was declared a World Heritage Site in 2000.

Adjacent to the church is the Romanesque Centre, responsible for the management and promotion of the Romanesque churches in Vall de Boí.