Kailashahar (or Kôilāśohôr) is the fourth largest urban area in the north eastern state of India, Tripura, located near northwest Bangladesh border. It is a Municipal council and the administrative center of the Unakoti district, this city is surrounded by unakoti hills and flows through Tripura's longest river, Manu . Kailashahar is a municipal council under Gaurnagar block. There are a total of 23 village panchayats in Gaurnagar surrounding Kailashahar, among which Rangauti, Bhagabannagar, Knowrabill, Irani are some. Kailashahar Municipality has a total of 16 wards or constituencies , and these wards consist of several Paras or localities . Some of these paras are, Boulapasa, Govindpura, Srirampur, Kachar Ghat, Pytor Bazar, Durgapur, Cinema Hall Para, Vidyanagar and many more. The urban area of Kailashahar Municipality generally consists of these paras which carry most of the urban population of the Town. The name Kailashahar is composed of two terms, Kailash and Har. The word Kailas is derived from Mount Kailash and Har means Shiva. Some people think that the earlier name of Kailashahar was Chambulnagar. Some believed that Hara (Shiva) lived in Kailash. Hence, the place was known as Kailash - Har , which later transformed into Kailashahar. Kailashahar, was the ancient capital of Tripuri Kingdom. Its history is intertwined with Unakoti and it is well known for its stone and rock carvings dating from the 7th - 9th centuries AD. A Shiva disciple who started the Tripuravada (Tripuri calendar), prayed for Lord Shiva at Chambulnagar village on the banks of the Mau (Manu) river. It is assumed that the Chambulnagar mentioned in the Rajmala was situated near the Unakoti Hills. The prince prayed for Mahadev in Unakoti. Kailashahar may be the legendary Chambulnagar. Hara (Shiva) lived in Kailasa, which influenced the name of the region to Kailasa Hara, which later transformed in to kailashahar. King Adi-Dharmapha of Tripura ruled there in the 7th century, he performed Yajna with pomp and joy.