Tha aim of the project is drafting the construction project for 2 stations of the new Line 9 of the Barcelona Metro, La Salut and Llefià, located in key points of the city.

La Salut and Llefià stations belong to the metro line built by a tunnel boring machine, where the metro travels under the ground at depths of up to 60 meters. La Salut station goes down 34 meters, while Llefià station goes 54 meters deep.

The stations center on two essential aspects of this sort of equipment: the first is reducing the claustrophobia effect and the second is counteracting the vertigo effect in the voids which give access to the platforms, sometimes up to 30 meters deep.

The strategy which is used to minimize these sensations is horizontal fragmentation of space. Claustrophobia is resolved by using back-lit panels on conflictive walls so the space looks breathable. Vertigo sensation is tamed by a sequence of illuminated gangways acting like balconies at a theatre, fragmenting the view of the void. The floor of the gangways is a perforated panel of galvanized steel to create different light qualities. Each station has an anti vandalism metallic finish, formed of perforated panels which provide the interior with a unitary image.

The relation to its surroundings is established at the entrance hall at street level. The hall of La Salut station receives natural light through a great skylight, an inheritance of the entrance route of materials during its construction. The entrances to the station connect through hallways to a great artificially illuminated atrium, which then opens to the space illuminated by the skylight. One of the hallways, great in length, uses the inclination of its walls as a mechanism to reduce the monotony of its pass. Each is lined with inlayed galvanized panels.

The station of Llefià is found more than 50 meters under ground level, with its entrance at the crossroads created by the Ronda de Sant Antoni and America Avenue in Badalona. The main entrance hall is at street level, part of a building base of public equipment which includes commercial spaces and/or municipal offices. The entrance is unconventional, characterized by a great pergola in scale with the city which intends to act as a central element and reference point for the neighborhood. The impact, language and exterior image is in relation to the proportions of the building underneath. This great pergola, built in galvanized steel and with growing vegetation is developed along the façade with a geometry which adapts and stresses the main entrance of the station. The circular void is emphasized by a high ceiling, limited by glass walls where the lifts going to the platforms and the validating machines are located.