Sivasagar

300 px|thumb|Corner view Kareng Ghar Sivasagar, formerly known as Rangpur, was the capital of the Ahom Kingdom from 1699 to 1788. In 1733, the Ahom queen Ambika devi dug a tank at the Ahom capital Rangpur. The tank covered 257 acres. A Shiva temple was built next to the tank and the tank came to be known as Shivsagar (sea of Shiva). With the passage of time, the entire region came to be known as Sibsagar. Today, the area in and around Sibsagar houses several temples along with pavilions, tanks and strategic military structures. 25 km south-east of Sibsagar lies the royal burial grounds of the Ahom Kings. These conical hill-like grass-covered structures were inscribed on the in 2024. The temples of Sivasagar follow a Nilachal style, a distinctive indigenous architecture style. Named after the Nilachal Hills in Guwahati, it originates at the Kamakhya Temple in Guwahati. It is characterized by a bulbous, beehive-like polygonal dome built over a multi-faceted base.