MILAN, ITALY - JANUARY 01: Mario Cavalle, architect creator of the Igloo houses in 1951, Quartiere Maggiolina, Milan, Italy. (Photo by Archivio Cameraphoto Epoche/Hulton Archive)
MILAN, ITALY - JANUARY 01: Mario Cavalle, architect creator of the Igloo houses in 1951, Quartiere Maggiolina, Milan, Italy. (Photo by Archivio Cameraphoto Epoche/Hulton Archive)