Rynek Główny is the main city square in Krakow. This square dates from the 13th century. There are records from 1257 that the square was rebuilt after being destroyed by the Mongol invaders in 1241. Its area is 3,8 hectares, which makes it the largest medieval square in Europe. Many significant buildings surround the square, such as St. Mary's Basilica (14th century) which is a beautiful example of Polish Gothic architecture, Church of St. Adalbert, and Town Hall Tower. Although the town hall has not survived to this day, and in the center of the square stands Cloth Hall which in 1978 was placed on the UNESCO World Heritage Sites list. Rynek Główny is next to Wawel Castle, the most photographed location in Krakow.