One of the largest and oldest cities in Poland, Krakow's city dates back to the 7th century. It was the capital of Poland from 1038 to 1596. As the former national capital with a history encompassing more than a thousand years, the city remains the spiritual heart of Poland. It is a major attraction for local and international tourists, attracting seven million visitors annually. Famous landmarks include the Main Market Square with St. Mary's Basilica and the Sukiennice Cloth Hall, the Wawel Castle, the National Art Museum, the Zygmunt Bell at the Wawel Cathedral, and the medieval St Florian's Gate with the Barbican along the Royal Coronation Route. In 1978, UNESCO added KrakÃ³w's historic centre, which includes the Old Town, Kazimierz and the Wawel Castle to the list of World Heritage Sites.