If you're a trekking and hiking enthusiast like me , you can visit
Har ki doon trek (uttarakhand)
Kashmir great lakes trek
sandakphu trek (India Nepal boarder)
kalpa and chitkul (Himachal Pradesh)
tirthan valley trek (Himachal Pradesh)
Nanda Devi (binsar - Himachal)
mangi - Tungi (Maharashtra)
sarahan (pilgrimage- Himachal Pradesh)
chakrata - uttarakhand
sainj valley - Himachal if you are planning in North India dalhousie
dharamshala
mcleodganj Manali
kullu
kasauli
kheerganga
Tosh
khajjir gangtok
sikkim if it's in South India
lonavala
coorg
Ooty
kodaikanal
Andaman if it's in North East
cheerapunji hope it helps you!