13th century. Although traditionally considered a Templar church, its construction has been attributed to the Holy Sepulchre Order. With a dodecagonal plant that surrounds the central structure, it has three apses. The church was inspired by the Holy Sepulchre Church in Jerusalem. A tower and a fourth apse were added later. It contains fragments of mural paintings. The building kept for centuries a relic of the Lignum Crucis, a wooden fragment from the cross were Jesus died. It currently belongs to the Order of Malta.