梵蒂冈, or the Vatican City, is an independent city-state located entirely within the city of 罗马, 意大利. It is the smallest country in the world, both in area and population, and serves as the spiritual and administrative center of the 天主教 Church. The Vatican is home to the 教皇, the leader of the Catholic Church, and contains significant religious and cultural sites, including 圣彼得大教堂 and the 西斯廷教堂. The Vatican is also known for its rich history and art, housing masterpieces by renowned artists such as 米开朗基罗 and 拉斐尔. It operates its own postal service, radio station, and even a bank. As a UNESCO World Heritage Site, the Vatican attracts millions of visitors each year, who come to admire its stunning architecture and art collections.