Il Duomo, officially known as the Cathedral of Santa Maria del Fiore, is the main church of Florence, Italy. Construction began in 1296 and was completed in 1436, showcasing a stunning blend of Gothic and Renaissance architecture. Its iconic dome, designed by Filippo Brunelleschi, remains one of the largest in the world. The cathedral's façade is adorned with colorful marble and intricate sculptures, making it a significant landmark in the city. Visitors can climb to the top of the dome for breathtaking views of Florence and the surrounding landscape, enhancing its status as a must-see attraction.