Hakaluki Haor is a marsh wetland ecological system of North-Eastern Bangladesh. It is one of Bangladesh's largest and one of Asia's larger marsh wetland resources. A total of 558 species of animals and birds have been identified here, including some very rare – already declared as threatened, vulnerable, endangered and critically endangered species. Some 190,000 people live in the surrounding Hakaluki haor area. Hakaluki Haor was designated an Ecologically Critical Area (ECA). It also is a protected Ramsar site of international importance for the conservation and sustainable utilization of wetlands. The surface area of Hakaluki Haor is 181.15 km2, of which 72.46 km2 (40.01%) is within the territory of Barlekha Upazila. It is also under Kulaura Juri upazila of Moulvibazar District and Golapganj, Fenchuganj upazila of Sylhet district.
Madhabkunda waterfall is one of the largest waterfalls in Bangladesh. It is situated in Barlekha Upazila in Moulvibazar District, Sylhet Division. The waterfall is a popular tourist spot in Bangladesh. Big boulders, surrounding forest, and the adjoining streams attracts many tourists for picnic parties and day trips.
Lawachara National Park is a major national park and nature reserve in Bangladesh. The park is located at Kamalganj Upazila, Maulvi Bazar District in the northeastern region of the country. It is located within the 2,740 ha (27.4 km2) West Bhanugach Reserved Forest. Lawachara National Park covers approximately 1,250 ha (12.5 km2) of semi-evergreen forests of the Tropical and subtropical coniferous forests Biome and mixed deciduous forests of the Tropical and subtropical moist broadleaf forests Biome. The land was declared a national park by the Bangladesh government on July 7, 1996 under the Wildlife Act of 1974.