The construction of the Church of Santa Anna in Castell de Castells dates back to the 18th century, although the bell tower was added in the mid-20th century. It is a single-nave temple with four sections and a series of lateral chapels, interconnected by buttresses. The central nave is covered with a barrel vault with lunettes and transverse arches, while the lateral chapels are covered with ribbed vaults, and it is possible to see the Tuscan order crowning the pillars. The exterior is simple, and it is necessary to highlight the stone door with voussoirs, a small niche, an upper opening and the square-floor plan bell tower topped with a capital of two bodies, located to the side.