Buitrago del Lozoya is a Spanish town on the Lozoya River near Madrid. It’s known for its well-preserved Moorish town walls. The 15th-century Castle of Buitrago del Lozoya was built in the Islamic-Spanish Mudéjar style. The Church of Santa María del Castillo has an ornate coffered ceiling. The Picasso Museum–Eugenio Arias Collection includes the artist’s ceramics and drawings donated by his friend, a local barber. Murallas medievales de Buitrago del Lozoya junto al río Lozoya