Depends on your budget, Domestic try the lesser known places like Ziro, Majuli, Chembra Peak
For international you could try it Irland, Switzerland, Or go to South Africa
You can choose from the following destinations in India- Manali
Shimla
Kasol
Kheerganga
Dharamsala
Mussorie
Kashmir
Ooty Outside India you can visit-
Bali
Indonesia
Dubai
Vietnam