After 30 years in a turn-of-the-century Porfirian villa, the renowned contemporary art gallery OMR decided to move to a new location. The chosen site was an existing brutalist building called Sala Margolin, originally dedicated to the sale of records and books. The building's design consisted of a single large space covered by a coffered concrete roof slab under which the different sections of the store were organized by subtle changes in floor level. The roof was supported around the perimeter and by four slender concrete columns framing a central skylight, the most important light source for the space.