Located in the heart of Mafra town – at the square with the name of the king who ordered its construction – it is the only National Monument that includes a Royal Palace, a Basilica and a Convent. Its area encompasses 40,000 m2 and 1200 divisions, which form part of spaces and instruments that are unique in the world. Such is the case with the Library, which contains all the knowledge of a collection of more than 36 thousand volumes; the bellringer assembly made up of two carillons with a total of 98 bells.