Patan, the oldest of all 3 cities of Kathmandu valley

Patan, the oldest of all the three cities of Kathmandu valley. It is the best known for its artistic heritage. It is probably one of the oldest Buddhist City in the world. The city is situated on a plateau across Bagmati River. Another name of Patan, is Lalitpur. The city is surrounded by 4Stupas as 4 corners of Patan, one at each corner of its cardinal points. These stupas are said to have been built by the famous Emperor Ashoka.