In the morning, head to Robber's Cave, also known as Gucchupani. This cave formation is surrounded by lush greenery and a cascading waterfall, making it a perfect spot for nature lovers. In the afternoon, indulge in a picnic in the nearby area or try the local street food. In the evening, take a leisurely stroll around the area and enjoy the serene environment.
On day two, visit the Mindrolling Monastery, one of the largest Buddhist centers in India. The monastery's architecture is awe-inspiring and peaceful. In the morning, explore the temple and learn about its cultural significance. In the afternoon, try the delicious food in the nearby restaurants. In the evening, take part in the evening prayers and chanting ceremony, which will leave you feeling refreshed and calm.
Other local attractions worth considering include the Malsi Deer Park, Sahastradhara, and the Tapkeshwar Temple. You could also consider a day trip to Mussoorie, a hill station located just 34 km away from Dehradun. To maximize your fun, try visiting during the monsoon season when the waterfalls are in full flow.