Gallery 8 meters long with a sculpture dedicated to Mars, the Roman god of war, which in reality seems much longer. This effect, the work of the brilliant mind of the architect Giovanni Borromini, was created using an ascending floor and a descending ceiling, with side columns that become smaller and smaller to simulate the effect of remoteness. All a small theatrical spectacle very typical of the aesthetics of the Baroque that is worth seeing. One of the most fascinating places in all of Rome, located in a courtyard full of orange trees in the Palazzo Spada, it is an optical illusion commissioned by Cardinal Spada, a g