Nalagarh is a city and a municipal committee in Solan district in the Indian state of Himachal Pradesh. It was the seat of the eponymous princely state during the British Raj, and known in medieval period as the state of Hindur. It was founded by the Chandella Rajputs in 1100 AD. At present Nalagarh is an emerging town for industries as it hosts production units for leather, steel, chemicals, thread mills and breweries; thus air pollution is quite a concern here. It is situated at 65 km distance from nearby major city Chandigarh. It has further been reduced to about 40 km after the opening of Chandigarh Siswan road.
Nalagarh is a gateway to Himachal Pradesh in North India, 300 km of north Delhi and 60 km from Chandigarh. The Fort which was built in 1421 during the reign of Raja Bikram Chand is located on a hillock at the foothills of the mighty Himalayas affording a panoramic view of the Shivalik hills beyond the Sirsa river.
In the early twentieth century, Nalagarh State was one of the Simla hill states, under the government of the Punjab. The country was overrun by the Gurkhas for some years before 1815, when they were driven out by the British, and the raja was confirmed in possession of the territory. Grain and opium have, in the past, been main agricultural products.