The name 'Neermahal' literally translates into water palace. It is a royal mansion located in the middle of the Rudrasagar Lake, 55 km from the capital city of Agartala. Built by Maharaja Bir Bikram Kishore Debbarman in 1930 as his summer palace, it has one of the finest incorporations of Hindu and Muslim styles of architecture and design. The palace has been made in marble and sandstone and is one of the largest palaces of its kind in the country. Its beautiful and well-laid gardens and flood lights add to the charm of the structure. Other highlights of the palace include water sport facilities and migratory birds that can be spotted over the Rudrasagar Lake. The palace becomes particularly attractive during the water festival that takes place annually in August. A boat race is held during the festival that invites visitors in droves. Moreover, cultural programmes and plays, along with a swimming competition are also held.