I have visited mussoorie in summer 2013 with my family and it was a very good experience for me because the place has a very good view and can be very relax-full for the mind specially for those who work a-lot in offices there is a empty fall which is key place to visit in mussoorie.
Any one can have a fresh bath inside the which which can be a one in a lifetime experience.So I would recommend everyone to visit the place once.