The Romans rarely used columns structurally save in porticoes and porches. They tended to apply the orders as ornament to a façade. On the Colosseum, the orders are used one above the other, the heavy Doric at the bottom and the decorative foliated orders at the top. The Romans invented two more orders for used in this way – the pseudo-archaic ‘Tuscan’ and the combined Ionic and Corinthian Composite.