Kasauli
This India List post advises that Kasauli is one of a number of hill depots created by the British Army in the mid-19th c for the families and some of the troops to escape to in the hot weather which was so unhealthy in the plains. Kasauli, together with Dagshai and Subathu, are on the ridges of wooded hills about 20 kms into the Himalayas on the road between Chandigarh and Simla.