Located on a triangular site within the Polanco area of Mexico City, this new museum building exhibits part of one of the largest private collections of contemporary art in Latin America – Colección Jumex – and is part of a wider urban redevelopment. Overlooked by large commercial buildings, the constrained site is delineated by the major street Miguel de Cervantes Saavedra, the Ferrocarril de Cuernavaca railway line and an adjacent property to the east. The extremely individual quality of the neighbouring buildings overrides any attempt to integrate the new museum within this particular urban context. The absence of a discernible streetscape or coherent aesthetic into which the project could be comfortably inscribed therefore offered a rare opportunity to create a distinct building that simultaneously contributes to the larger context. Heading the triangular park, the building can be described as a freestanding pavilion that corresponds to the eclectic nature of the neighbouring buildings, which include the Museo Soumaya and the underground Teatro Cervantes. The mass of the building responds to the non-orthogonal plan of the site, which it exploits to provide the maximum footprint while delivering the programme within the constraints of local planning requirements.