You can to Triund trek,Parvati valley(kheerganga trek,Mantlai lake trek),Mandi(Prashar lake trek). You can check the pics on my posts and choose the trek yourself.
Most places in Himachal will offer you brilliant view . You can stay at Mcleodganj , Dalhousie , Khajjiar etc
Even Darjeeling will offer a stunning view of the mountains