Architectural and Historical Reserve "Old Plovdiv" (also known as the Old Town) is located on three of the hills of Plovdiv - Nebet Tepe, Jambaz Tepe and Taksim Tepe, also known as the Three Hills, and covers an area of 35 km². It was formed as a result of the continuous life in the city for centuries (from prehistory to the present day) and combines the spirit and architecture of antiquity, the Middle Ages and the Bulgarian Renaissance. The old town is one of the most popular tourist destinations in Plovdiv.