We went on a paid tour of Duomo to get exclusive access to some of the areas of the famous landmark. Well worth the price and exercise (had to go up around steps to get to the top). By the way, this is not even close to the top.
Citta del vaticano, Basilica di San Pietro, Bernini's Baldacchino and dome of Michelangelo Buonarroti, Roma Italy-- The only place I have ever stood and truly believed man could not have made this alone
Siena, Italy also located in the Chianti region houses a gothic cathedral and paintings by medieval masters, Duccio and Simone Martini. The Renaissance and Etruscan history are evident in each landmark of the region.