The Palazzo dei Papi is a historic palace located in Viterbo, Italy. Built in the 13th century, it served as the residence for several popes during the papal seat's relocation from Rome. The palace features impressive medieval architecture, including a grand façade and beautiful frescoes. Inside, visitors can explore the Salone del Conclave, where papal elections were held. The palace is also known for its stunning gardens and courtyards, making it a popular tourist destination. Today, the Palazzo dei Papi is recognized as a UNESCO World Heritage site, highlighting its cultural and historical significance.