Setting up of a cantonment area at Solan.
- Establishment of a brewery on account of availability of excellent mineral water in the year 1855.
- Shifting of the headquarters of Baghat State from Bhoch to Solan.
- Start of Kalka-Shimla rail line in 1902.
- Start of vehicular road movement on Kalka-Shimla road.
- The urban local body i.e. M.C. Solan came into existence around 1950.
- Consequent upon re-organisation of districts in Himachal Pradesh, Solan became an independent district on 1 September 1972 and Solan town became its natural headquarters.