The Cattedrale di Santa Maria Assunta, located in Siena, Italy, is a stunning example of Italian Romanesque-Gothic architecture. Construction began in the 12th century, and the cathedral is renowned for its intricate façade, beautiful frescoes, and remarkable marble floors. It serves as the main church of the city and is dedicated to the Assumption of the Virgin Mary. Inside, visitors can admire the impressive works of art, including sculptures by Michelangelo and Donatello. The cathedral also houses the famous Piccolomini Library, which features vibrant frescoes by Fresco artist Raphael. The Cattedrale is a UNESCO World Heritage site, attracting tourists from around the world.