The history of this ancient capital dates back to 7th-9th century AD. One of the most important feature of Kailashahar is Unakoti with stone and rock cut images dating back to the 7th-9th century.
The capital city of Tripura is full of interesting places to visit and things-to-do, even if you are travelling solo. For instance, College Tilla (Maharaja Bir Bikram College) is as lush a landscape as they come. It is also great for birdwatching, if you are also into that. Ujjayanta Palace, home of the Tripura royals is now a museum. The marvelous architecture is worth more than just a dekko.
Visit Udaipur, the erstwhile seat of the Maharaja of Tripura, for its temples. Tripura Sundari temple is one such, you shouldn't miss this. Also known as Tripureshwari Temple, the temple is one of the 51 Shakti Peeths.
Don't just stop at Unakoti. Located in South Tripura district, Devtamura is another destination you need to cover when in Tripura. A boat ride on the Gomti River will bring you to an archaeological site of interesting rock sculptures dating back to the 15th-16th century. The location is called Chabimura. There are in total 37 rock-cut images that you can enjoy on your quiet boat-ride.