Magical Manali, Calm Nainital and Bustling Shimla, these are 3 major hill stations which are must visit for everyone.

You may get a complete trip plan for these places at:
http://www.feelandreview.com/places_dom ... nital.html
http://www.feelandreview.com/places_dom ... anali.html
http://www.feelandreview.com/places_dom ... himla.html

But in short I will describe them as follows:
Manali
Manali is very beautiful hill station situated on the Beas River. It is in the northern end of the Kullu valley in Himachal Pradesh and at the height of 2050 mtrs.It is the perfect outing and the picnic spot for Indians in summers and a magical snow covered place in winters.

Nainital
Nainital is a town in Uttaranchal Pradesh . Nainital is set in a valley which is having 2 miles long lake surrounded by mountains. Nainital is filled with scenic natural places and varied natural resources. Lake is the main attraction of this place.

Shimla
Shimla is a very beautiful hill station in India called the capital of the state of Himachal Pradesh. This place is famous for its Victorian architecture. The name Shimla originate from the goddess name Shyamali Devi.