Florence's Duomo (Santa Maria del Fiore) is famous for its most important religious building and it is a truly awe-inspiring sight. Birthplace of the Italian Renaissance, it has been Italy's major tourist center, attracting people to its culture, arts, and architecture. One of its most iconic sights is the Duomo, a cathedral with a terracotta-tiled dome engineered by Brunelleschi and a bell tower by Giotto.