Rehabilitate, in the strict sense of the word, is enabled again, re-enable only that return is not the past but the future, a return that will sustain the life of the building in question and that often involves , your complete modernization and sometimes even a change of use.When it comes to modernist buildings, as Oller House Salvat i Espasa, Palau Macaya of Puig or the building in which we have the office, the Mayol House, built for the Exhibition of 1888, no one doubts the importance of heritage on which it intervenes. But heritage is all built, and why interventions appear on a Georgian building in London, in various buildings of the nineteenth century, in the Eixample district of Barcelona but also in "modern" buildings from the last century 50-60 of outstanding architects, as the seat of Inmobiliaria Colonial, located in a building of Busquets, the Mutua Madrileña de la Castellana in Madrid, the work of Gutierrez Soto, or the Auditorium and Training Center Winterthur, in the resort of L 'Illa Diagonal Rafael Moneo and Solà-Morales.