Sivasagar, previously spelled Sibsagar, the ocean of Lord Shiva, is a town in the Sivasagar district in the state of Assam in India, about 360 kilometres (224 mt) north east of Guwahati. It is the district headquarter of the Sivasagar district. Apart from its history, culture, and tanks, it is also famous for its Ahom Palaces and Monuments. Now it is a multicultural town. Sivasagar today is also an important center for oil and tea trading.
This town's main feature is the water body from which it gets its name. This is a 257-acre (1.04 sq km) tank also called Borpukhuri, at a higher elevation than the rest of the town, with three temples ("Doul"s in Assamese) on its banks. Of these temples, the most prominent is the Sivadol, standing tall at 104 feet (32 m), drawing large crowds on Shiv Ratri. The other temples are the Vishnudoul and Devidoul. The temples were built by Kuwori Ambika, wife of Swargadeo Siba Singha, in 1734.
- Joysagar: Joysagar, said to be the biggest man-made lake in the country, is spread over 318 acres (1.29 sq km) of water on the edge of the town in an area called Rangpur, 5 kilometres (3.1 mt) away from the present Sivasagar Town. This lake was built by Swargadeo Rudra Singha in honor of his mother, Joymoti.
- Gaurisagar: Bor Kuwori Phuleshwari Devi, the queen, built this tank, which is spread over 150 acres (0.61 sq km). The three famous temples, namely the Vishundoul, Devidoul and Shivdoul, were constructed on its bank.
- Rudrasagar: Swargadeo Lakshmi Singha built this tank, dedicated it to his father Swargadeo Rudra Singha, in 1773. A Shiva Temple was also build on the bank of this beautifully constructed tank. It is 8 kilometres (5.0 mt) away from the city of Sivasagar.
- Sivadoul: Dedicated to the Hindu god, Lord Shiva, one the most sacred temple. This is at a height of 104 feet (32 m). It is thronged by all the devotees during the festival of Shivratri. It was built in 1734 by Kuwori Ambika. It is 104 feet (32 m) tall and encircles over an area of 195 feet (59 m).
- Vishnudoul: Dedicated to the Hindu god, Lord Vishnu, this is another important temple in Sivasagar. According to the Hindu calendar the month of "Bhada", is supposed to be very auspicious, though one can visit throughout the year. Kuwori Ambika constructed these temples. She was the wife of the Swargadeo Siba Singha.
- Devidoul: Dedicated to the Hindu Goddess of Power, Durga, which is another important temple in Sivasagar. Durga Puja, the most important festival of the temple is celebrate twice in a year. The first one is celebrated in the month of Chaitra (April-May) and the other in the month of Ashwin (September-October).
- Rang Ghar: Rang Ghar is a double-storied, oval shaped amphitheater with a roof which is shaped like an inverted boat. It was constructed by Swargadeo Pramatta Singha. It is said to be amongst the largest of amphitheaters.
- Talatal Ghar: Talatal Ghar is a palace, initially built as an army base. This has two secret tunnels, three floors underground, used as exit routes during wars. The upper four stories are known as Kareng Ghar. In total, it is a seven-floored building.
Panidihing Birds Sanctuary:
- Sivasagar Tai Museum: A new addition is the Tai Ahom Museum on the bank of the Sivasagar. It stores artifacts of the rulers, including swords, clothes, manuscripts, goblets and platters.
A rich wetland eco-system of 33.93 square kilometres (13.10 sq mt) on the southern bank of river Brahmaputra in the Sivasagar district. Birds: A paradise of migratory and resident birds, so far 165 species of birds have been identified and recorded. A place for quite high concentration of geese and other migratory birds. The common birds seen are bar-headed goose, grey leg goose, spot billed duck, mallard, gadwall, wigeon, gargany, shoveller, red-crested pochard, common pochard, ferruginous duck, adjutant stork, lesser adjutant stork, open-bill stork, white-necked stork, etc. Aquatic fauna: Varieties of fishes have been identified along with various species of frogs and snakes, etc.
The ancient capital of the Ahoms is Gargaon about 13 km east from Sivasagar, where the major draw is the Kareng Ghar, a seven-storied palace built by 18th-century architects. Charideo situated nearby, is another old capital which was built by Sukapha, the founder of the Ahom dynasty. There are Maidams, or vaults for the king and members of royal families here. Travellers cross the Namdang Stone Bridge
, carved out of a single boulder hundreds of years ago, over which the busy national highway (NH 37) still runs today.
- Road: Sivasagar is well connected by road with rest of the state. State-run buses go to places like Guwahati, Dibrugarh, Jorhat very frequently from Assam State Transport Corporation's (ASTC) bus station in Sivasagar town. Private buses are also available. Taxis are also available for hire. Auto-rickshaws and other modes of transports are also available in and around the town. The cheapest ones, like Tata Magic and Tempoes, are available through Nazira, Mechagarh, Joysagar to Sivasagar.
- Airport: The closest airport is located at Jorhat (55 km) from away from the city of Sivasagar. The airport is connected with many major cities such as Guwahati, Kolkata, Bangalore. It is also connected with Dibrugarh and Shillong. Another option is the Dibrugarh Airport that is located at a distance of (80 km) from the city. There are frequent flights services to both the places and one can opt for either choice. You can opt for taxis from the airport.
- Railway: Sivasagar Town is a beautiful town & it also have a railway station. The Dibrugarh – Yesvantpur Express connects this station. The nearest railway station on the Tinsukia-Guwahati sector of North East Frontier Railways is Simaluguri, 16 kilometres (9.9 mt) from Sivasagar town. Buses ply regularly from Simaluguri towards Sivasagar. It is approximately a half-hour bus ride from Simaluguri town.