The National Palace of Sintra is located at the Praça Republic (the Republic Square) in Sintra town. Sometimes this palace is called the Town Palace. An old Muslim palace had existed here till Lisbon was conquered by Afonso Henriques (Afonso I), the first King of Portugal in 1147.
The interior of the palace is a mix of Moorish and Manueline styles, with arabesque courtyards. In front of the National Palace of Sintra, just beyond the town lies the Monte da Lua (Mountain of the Moon). To one side of the palace, there is a sudden drop and it creates a small valley with the few houses inside the valley.