An internal street, perpendicular to Montcada Street, traces the access road to the back garden and the annex building, thus reinforcing the public character of the ground floor, turning what could be a simple interior transformation into an urban operation.
The new building houses the "Picasso Museum Barcelona study centre", with complementary activities that allow the Museum to be more closely connected with its surroundings.
The main façade facing Sabartés Square defines a new composition plan, independent of the current Museum as a whole but with a close relationship established by proximity. A large glass protected by an overhang opens it over the city. In addition, this allows for visual continuity between the Museum's garden and the square, highlighted in a unitary manner. The other two façades, the one on Flassaders Street and the Picasso garden, are more hermetic due to the private world created inside the volume. All the shapes, the openings, of the same size as the existing ones in the Picasso Museum, allow the view and the relationship with the street and the garden.
Two materials ensure the permanence of the building in its urban environment, thus adding to the complexity of its vision: the stone on the ground floor and the stucco on the upper floor.