The capital of the erstwhile princely state of Sirmaur, Nahan was founded in founded in 1621 by Maharaja Karam Prakash and this was the only state in present day Himachal Pradesh whose ruler had title of Maharaja. The remains of the original capital lie at Sirmauri Taal, near Paonta Sahib and this was destroyed in a flood, supposedly after being cursed by a dancing girl. A laid-back attitude and a clean and dust-free atmosphere are the prime features of the Nahan town in the state of Himachal Pradesh.
Today’s Nahan is a charming town which is also the headquarters of the district of Sirmaur. It has graceful houses, winding roads and several old palaces. The town has one the oldest municipalities in the country and this dates back more than a century. The Nahan Foundry, established in 1873 under the aegis of Raja Shamsher Prakash, remains a heritage enterprise with its old casts and machines. The
45 km from Sirmaur, Built in a series of interlocking circles. It is situated at an altitude of 932 metres from the sea level. It has numerous pleasing walks, several temples, a gurudwara and interesting architecture. It has as a pleasant climate almost throughout the year. It has several famous temples and tanks which add considerably to its attraction. It has an ancient palace just in the heart of the town which has its own importance and attracts the tourists from outside the town. It commands on all sides extensive and beautiful views. The town's special attractions include its three lovely and lonely walks, known as the Villa Round, the Military Round and the Hospital Round, which give the tourists a very Nahan Town pleasant view of the surrounding areas. Just below the palace is the beautiful garden known as Ranital Bagh which is one of the most beautiful spots of the town. Anytime is a good time to visit Nahan in Himachal, as the town has a pleasant climate and invites visitors throughout the year. From the tourist point of view this town has its own importance having all modern amenities with well furnished rest houses and other private accommodation.