Dry stone has been and is a constant in Vilafranca. For centuries, the need to increase the surface area and quality of arable land was kept off their land to large amounts of stone. The settlers of this town created their own architecture, simple and popular, a unique way of understanding the environment around them. Dry Stone Museum of Vilafranca houses well-illustrated exhibition of stone for walls, sheep pens and buildings. The museum is located on the top floor of the Gothic building of La Lonja.