2Florence Cathedral, Italy
The Florence Cathedral, or Il Duomo di Firenze, is an architectural gem of the Italian Renaissance. Its striking red-tiled dome, engineered by Filippo Brunelleschi, dominates the Florence skyline. The exterior is adorned with green, pink, and white marble panels, while the interior features Giorgio Vasari’s Last Judgment frescoes. Climbing to the top of the dome offers breathtaking views of Florence and the surrounding Tuscan countryside.