GasaGasa is located in the extreme northwest of Bhutan. It is the largest district in terms of the geographical size, but has the smallest population of all the districts. It is fondly referred to as the true Abode of the Himalayas. The references originates from the presence of peaks that are towering and appear piercing into the sky, most of the mountains remain snow-capped, major rivers of Bhutan run through Gasa, and it is rich in floral and faunal diversity. The national animal Takin and the national flower Blue Poppy are found in Gasa.

Among both Bhutanese and tourists, Gasa is known for its famous medicinal hot spring. People from all walks of life visit the hot spring to take a dip into and get cleansed of diseases and illness.

Gasa remains in snow much part of the year. Most inhabitants of the district are nomads, who migrate to lower lands with their yaks and cattle in winter months. The most formidable of trekking trails in Bhutan – Snowman Trail – passes through Gasa district.

A cultural hallmark of Gasa is its fortress. In the olden days it served as a watchtower to keep tab of any invading forces from the north (Gasa shares borders with Tibet). The fortress is circular in shape and has three towers.