Picasso Museum-Eugenio Arias Collection Monument · Buitrago del Lozoya, Sierra Norte, Madrid Opened on 5 March 1985, it brings together some sixty works that Picasso gave to Eugenio Arias Herranz, a native of Buitrago exiled in France who was his barber and friend; it includes ceramics, prints and drawings, and admission is free. Photo: Diego Sanz Siguero (CC BY 3.0) What to see and do in Buitrago del Lozoya