Most people love Siena for many reasons, but I fell in love, at first sight, with Piazza del Campo. I can still visualize every single detail that lured me in on my first visit many years ago. For any artist, or art history buff, just standing in the main piazza, being physically surrounded by the color siena, while in the city of Siena, is like a dream realized!There is clearly more to Siena than it's main piazza, but I promise you, that colorful circle of stone and brick will not disappoint. The Basilica di Santa Maria Assunta, Siena's Duomo, is one of a kind. Tommaso is a fan, and he hasn't even seen it in person yet. The flooring which is comprised of mosaic panels has been called the most beautiful floor ever made. Most of it is covered to prevent further wear from the millions of feet that have traipsed over these teeny pieces of marble, yet they are uncovered twice a year, so a travel tip is to plan your visit around that!