The state hosts the Bengal tiger in Jim Corbett National Park, the oldest national park of the Indian subcontinent. The Nanda Devi and Valley of Flowers National Parks, a UNESCO World Heritage Site located in the upper expanses of Bhyundar Ganga near Joshimath in Gharwal region, is known for the variety and rarity of its flowers and plants. One who raised this was Sir Joseph Dalton Hooker, Director of the Royal Botanic Gardens, Kew, who visited the region. As a consequence, Lord Dalhousie issued the Indian Forest Charter in 1855, reversing the previous laissez-faire policy. The following Indian Forest Act of 1878 put Indian forestry on a solid scientific basis. A direct consequence was the founding of the Imperial Forest School at Dehradun by Dietrich Brandis in 1878. Renamed the 'Imperial Forest Research Institute' in 1906, it is now known as the Forest Research Institute.