Holi is a Hindu spring festival celebrated in India and Nepal, also known as the "festival of colours" or the "festival of love".
The hill stations are high-altitude towns used, especially by European colonialists, as a place of refuge from the summer heat.
From Amritsar it is also possible to visit the border between India and Pakistan. As the two country's are not really in a very good relationship with each other its quite a thing.
On my way from Amritsar to Dehradun I had to stay a night in Chandigarh.
If you are interested in the real Punjab this is the place to be. Sadda Pind is such a cool place where you can see the real Punjab.