The Gianni Caproni Museum, founded in 1929 and now installed in its permanent home near the Trento airport, is one of the world’s largest private aviation museums. It chronicles the history of Italian aeronautics and the family’s aircraft companies, which started in 1909 with Gianni Caproni’s design for the Ca.1 biplane. Umberto Caproni recently added two planes to the display: the Ca.18 monoplane, left, employed before World War 1, and the Ca.100 biplane, first used in 1928. (January 1994 Architectural Digest)