The Royal Palace of Madrid is the official residence of the Spanish royal family at the city of Madrid, although now used only for state ceremonies. The palace has 135,000 square metres of floor space and contains 3,418 rooms. It is the largest functioning royal palace and the largest by floor area in Europe.
King Felipe VI and the royal family do not reside in the palace, choosing instead the significantly more modest Palace of Zarzuela on the outskirts of Madrid. The palace is now open to the public, except during state functions, although it is so large that only a selection of the best rooms are on the visitor route at any one time, the route being changed every few months. An admission fee of €13 is charged; however, at some times it is free. The palace is owned by the Spanish state and administered by the Patrimonio Nacional, a public agency of the Ministry of the Presidency. The palace is on Calle de Bailén in the western part of downtown Madrid, east of the Manzanares River, and is accessible from the Ópera metro station. (Wikipedia)