Their contribution to the development of Rationalism is evident not only in their architecture but in their involvement with MIAR and the journal Quadrante born as a rival to Casabella.

The firm came to notice after World War II with the abstract design for the Monument to the Victims of Nazi Concentration Camps, erected within the Cimitero Monumentale di Milano.

Located in the centre of an open plaza, its white, tubular frame encloses a glass cube that holds a mess tin containing blood-soaked earth from the Mauthausen-Gusen concentration camp in Austria.

[2] BBPR reacted against the polemic of the International Style in 1954, with the creation of the Torre Velasca in Milan, complete with its abstract medieval references.

The firm was subsequently employed to create new interior spaces and exhibition designs for the museums housed within Milan's Castello Sforzesco, which had been severely damaged by allied bombing in 1943.