The Galleria prospettica del Borromini in Rome Italy is a remarkable architectural feat and optical illusion created by famous Baroque architect Francesco Borromini. Commissioned by Cardinal Spada, the corridor creates an extraordinary illusion of greater depth than its true distance of 26 feet. It is complemented by a heroic sculpture of Mars at the end of the colonnaded gallery which is actually just 24 inches tall. Borromini's mastery of mathematics combined with expert monk Giovanni Maria's accelerated perspective technique make this wonder of an illusion one not to be missed!