Manas National Park and Tiger reserve is a UNESCO World Heritage Site located in which state of India:

The correct answer is Assam . Key Points Manas National Park is a UNESCO World Heritage Site located in the state of Assam , specifically in the Baksa and Chirang districts within the Bodoland Territorial Region . It serves as a Tiger Reserve , an Elephant Reserve , and a Biosphere Reserve , making it one of the most significant conservation areas in Northeast India . The park is contiguous with the Royal Manas National Park in Bhutan , creating a vital trans-boundary wildlife corridor for species migration. The Manas River , which is a major tributary of the Brahmaputra River , flows through the heart of the park, providing a diverse aquatic ecosystem. It was inscribed as a World Heritage Site in 1985 by UNESCO for its outstanding universal value in terms of biological diversity and natural beauty. Additional Information Flora and Fauna: The park is famous for being the home of rare and endangered endemic wildlife such as the Assam Roofed Turtle , Hispid Hare , Golden Langur , and the Pygmy Hog . It also hosts a large population of Wild Water Buffalo , Indian Rhinoceros , and Indian Elephants . The vegetation consists of Sub-Himalayan Bhabar Terai formation, East Himalayan mixed moist deciduous forests , and Assam Valley semi-evergreen forests . Assam's National Parks: Besides Manas , Assam has several other national parks including Kaziranga National Park (also a UNESCO World Heritage Site ), Nameri National Park , Orang National Park , Dibru-Saikhowa National Park , Raimona National Park , and Dihing Patkai National Park . History of Designation: Manas was declared a Sanctuary on October 1, 1928 , and later designated as a Tiger Reserve in 1973 under Project Tiger . It attained the status of a National Park in the year 1990 . Important Points Meghalaya: This state is known for Balpakram National Park and Nokrek National Park , which is also a UNESCO Biosphere Reserve . It is famous for the Red Panda and unique Pitcher Plants . Odisha: Home to Simlipal National Park (a Tiger Reserve ) and Bhitarkanika National Park , which is a major Ramsar Site known for its Mangroves and Saltwater Crocodiles . West Bengal: Features the Sundarbans National Park , a UNESCO World Heritage Site famous for the Royal Bengal Tiger and the largest Mangrove Forest in the world. Other parks include Jaldapara and Gorumara . Conservation Status: Manas was placed on the List of World Heritage in Danger in 1992 due to heavy poaching and terrorist activities but was removed from the danger list in 2011 following significant improvements in conservation efforts.