Shimla was developed by the British in the 19th century as the summer capital of India. The town has continued to grow and now covers a much larger area, but at its heart remains the Mall, lined with colonial era buildings. It is a perfect place to stroll around to appreciate Shimla's past and to make excursions to the countryside around whilst enjoying the salubrious air and scenic views.
Day 1 - Shimla
The most interesting way to reach Shimla is to travel at a leisurely pace through stunning mountain scenery on the famous narrow gauge railway from Kalka. You first travel by a modern express train from Delhi to Kalka and then connect with the traditional "Toy Train" to Shimla. This narrow gauge line was completed at the end of the 19th century and it needed 103 tunnels, 24 bridges, and 18 stations to finish the 96 km railway track. Even though travel by road is faster these days, travel by train is a much more memorable experience.
Day 2 - Shimla
Shimla is built on a central ridge surrounding by seven mountain peaks. There are many beautiful walks in the pine clad hills that surround Shimla, such as to the Jakhu temple with its resident population of monkeys, or to the former Viceregal Lodge with its botanical gardens. Alternatively you can walk to the Kamna Devi temple at the summit of Prospect Hill which affords excellent views of the countryside.
Day 3 - Shimla
Today your tour ends after breakfast. You can either return to Delhi or continue to Manali (250 km, 8 hrs) or Dharamsala (288 km, 7 hrs).
Note: You can also do this itinerary in reverse.