Discover the palace of Mafra, a magnificent building that was only possible due to the "Brazilian gold" that poured into the country, allowing King João V to carry out the building of the biggest baroque palaces from the 18th century. Its construction began on November 17, 1717 and it integrates 4 buildings in one: the palace, the convent, a basilica and a library. You will walk though the longest corridor ever built in a palace (232 m long). All made of limestone and marble from this region (Pêro Pinheiro and Sintra), the building covers an area of almost four hectares (37.790 sqm2), including 1.200 rooms and more than 4.700 doors and windows. The library itself is one of the most important in Europe, having an enormous variety of books (more than 30.000 volumes) from the XVth to the XVIIIth century. Flanked by two towers, the basilica is the “center piece” of the facade having been designed by the German architect Johann Friedrich Ludwig and commissioned by D. João V.