Buitrago del Lozoya

• Buitrago del Lozoya Castle, a Gothic-Mudéjar structure dating from the 15th century, with rectangular plan
• the church of Santa María del Castillo, in the same style
• the Picasso Museum. This small museum contains works by Pablo Picasso from the collection of Eugenio Arias. Arias, a barber by profession, came from Buitrago and was a friend of the artist.