Himachal is mostly famous for its adventures and treks. If you want to do adventure you can visit Bir billing for paragliding. Otherwise you can do treks depending on no of days and according to season.
Himachal Pradesh is scenic all year round. It’s only apt that you book your Himachal Pradesh tour package that is spread out for more than a week in order to capture as much as you can. Secondly decide the destinations that you want to book your Himachal Pradesh Tour Packages for because there are destinations that are touristy but you don't want to miss and there are destinations that are super remote but it is very peaceful. I would recommend that if you are someone who is adventurous book more of remote places spread & if you are going with your family you can book Himachal Pradesh tour package that cover places like Shimla, Manali and Dharamshala https://www.tripoto.com/himachal-pradesh/tour-packages