Spend the day exploring the world's largest delta at Sundarbans National Park, a UNESCO World Heritage Site. Take a boat tour through the mangrove forests, spot Bengal tigers, saltwater crocodiles, and millions of migratory birds. Learn about the ecology and conservation efforts at the park's Interpretation Centre.
Ride the narrow-gauge Darjeeling Himalayan Railway to Ghum, the highest railway station in India. Marvel at the stunning views of the Himalayas and tea plantations from the train. Go for a trek in the lush green hills, visit a tea estate and learn about the history of tea in Darjeeling at the Himalayan Mountaineering Institute and the Darjeeling Tea Museum.
Explore the iconic Victoria Memorial, a neo-classical monument built in honour of Queen Victoria. Walk through the galleries of the museum and admire the art and artifacts from the British Raj. Afterward, head to the nearby River Hooghly, one of the distributaries of the Ganges, for some thrilling white water rafting.
If you have more time, add a day trip to the ancient city of Bishnupur, known for its terracotta temples. If you have less time, skip the trekking in Darjeeling and opt for a drive through the scenic mountain roads instead. Also, consider bringing insect repellent and sunscreen for your outdoor adventures.