Medieval castle, artistic and architecturally representative of the various stages of construction and reconstruction since its founding until the twentieth century. Structures that make up the architectural ensemble Royal Palace fifteenth, Homage Tower, Church of Sta Maria Pena, the former Collegiate space, medieval barns and outer walls. In 1325 D. Dinis build the castle tower, that after some reformulations is now a museum center. On a visit to the Castle you can not miss to observe the magnificent view over the city of Leiria, from the Alcáçova, one of the most beautiful rooms of the Castle.