Located between Bairro Alto and Madragoa, two of the city's most popular neighborhoods, the museum building was designed by architect Álvaro Siza (Matosinhos, 1933), winner of the 1992 Pritzker Architecture Prize.

The architectural project of the Atelier-Museu Júlio-Pomar was designed by architect Álvaro Siza Vieira (Matosinhos, 1933), Pritzker Prize winner in 1992.

Purchased in 2000 by the Lisbon City Council, this former warehouse on Rua do Vale was intended to be the studio of Júlio Pomar, who lived on the same street during the last years of his life.

The renovation work extended over several years and, in 2010, the artist gave up using it as a studio, making it possible to open the space as a museum earlier than anticipated.

With an austere design and clean lines, discreetly integrated into the architectural fabric of one of Lisbon's most characteristic neighborhoods, the Júlio Pomar Studio-Museum building, consisting of two floors, features a central exhibition area, two storage rooms, service areas, an office, and a reception, concealing an exterior courtyard around which visitor access is made.