Chosen by Barcelona’s bourgeoisie at the beginning of the 20th century as the location for their summer villas, the upper part of Pedralbes offers us several examples of residences in a variety of styles. Casa Grané (or Villa Hèlius) is one of the most successful examples of Catalan Art Nouveau in Les Corts. Designed by Manuel J. Raspall i Mayol (1906-1909), an architect who specialised in this kind of summer villa, this building is listed in the Barcelona Architectural Heritage Catalogue. This prototype building is based on the volumetric juxtaposition of fairly simple geometrical bodies, with towers in the corners; it shows many of the most remarkable elements of the Catalan Art Nouveau repertoire in the decoration of its external walls: floral and geometrical artwork, mosaic ceramic, among other things. Only the exterior is currently open to visits.