What is the name of the cathedral in siena?

The cathedral in Siena is called the Siena Cathedral, or "Duomo di Siena" in Italian. It is renowned for its stunning Romanesque-Gothic architecture and intricate marble façade. The interior features beautiful artworks and a strikingly decorated floor, making it a significant landmark in the city. The cathedral is also part of the UNESCO World Heritage Site that encompasses the historic center of Siena.