Built between 1932 and 1936 in the district of Sant Andreu in Barcelona, ​​Casa Bloc is a paradigmatic example of the first Rationalist architecture in Catalonia. It was designed by Josep Lluís Sert (1902-1983), Josep Torres Clave (1906-1939) and Joan Baptista Subirana (1904-1978), members of GATCPAC (Group of Catalan Architects and Technicians for the Progress of Contemporary Architecture). It is a group that, along with the Government of Catalonia, promoted the introduction of modern architecture to the country in the early 1930s.

During the Second Republic, it was an innovative social project integrated into the urban environment and featured functional housing conceived as standardised accommodation for workers. A 'new' architecture that defined the modern urban morphology, typical of the twentieth century, in contrast to the Eixample in the nineteenth century.

Today you can visit the house 1/11 of the Casa Bloc, converted into an apartment-museum run by the Design Museum of Barcelona. The museum project has restored the original structure and appearance of the home, and presents it as its creators had intended.