Tawang is a town and administrative headquarter of Tawang district in the Indian state of Arunachal Pradesh. It lies on NH-13 section of Trans-Arunachal Highway. The town was once the headquarter of the Tawang Tract, which is now divided into the Tawang district and the West Kameng district. Tawang continues as the headquarters of the former. Tawang is the number one tourist destination of Arunachal Pradesh.

Sela Tunnel is a road tunnel at 3,000 metres (9,800 ft) which ensures all-weather connectivity between Guwahati in Assam and Tawang in Arunachal Pradesh. This tunnel is the longest bi-lane tunnel in the world at 13,000 feet. Situated 400 metres below the Sela Pass, the Sela Tunnel offers a vital passage, even during the winter season. The tunnel helps them move troops, weapons, and machinery quickly along the Sino-India border. It is connected with NH 13 by a new 12.4 km road and has reduced the distance between Dirang and Tawang by 10 km. It was inaugurated by PM Modi on 9 March 2024.Executed by the Border Road Organisation (BRO), the project features two tunnels and a link road. Tunnel 1 is a 980-metre-long single-tube tunnel, while Tunnel 2 is a 1,555-metre-long twin-tube tunnel, with one bi-lane tube for traffic and the other for emergency services. The link road between these tunnels spans 1,200 metres. The tunnel provides access to Tawang by an all-weather road in the western region of Arunachal Pradesh throughout the year.