Tanguar Haor is a river basin which is located at the Tahirpur Upazila of Sunamgonj district in Sylhet Division.
Its takes roughly 6-7 hours to reach here from Dhaka.
After getting off at the Surma Bridge just off the Bus station, you need to hire a bike or a CNG Taxi to get yourself at Tahirpur.
From Tahirpur you can hire boat and enjoy the beauty of Haor.