The Spanish Royal Palace (Palacio Real) is one of the biggest palaces in Western Europe. The palace is known for its extravagant interior and the staggering collection of furniture, artwork, weapons, armor and accessories found throughout its 3,400 rooms. Construction of the building you see today started in 1738 after the previous royal residence burned down on the same site in 1734. Nowadays the Spanish royal family does not live in the palace.
The Royal Palace is in central Madrid and the closest metro station is Ópera. Visitors can wander the rooms at will or can join a guided tour for an extra fee. The palace is open every day except national holidays.