Butterflying tours: Eastern India is home to over 1200 species of butterflies, and it’s considered as the richest butterflying area. The best areas to go for a butterfly tour are: Lava, Neora Valley National Park, Gorumara National Park, Chapramari Wildlife Sanctuary, Darjeeling, Tiger Hill, Sandakphu, Singalila National Park, Chilapata Wildlife Sanctuary, Buxa Tiger Reserve, Senchal Wildlife Sanctuary, Panchet Hill and Sunderban National Park in West Bengal.