Lung Cu flagpole is a national flagpole located at the top of Lung Cu, also known as the summit of Dragon Mountain. The flagpole is at an elevation of about 1,470 m above sea level, belonging to Lung Cu commune, Dong Van district, Ha Giang province, the northernmost point of the Fatherland. The architecture of the flagpole is designed in an octagonal shape; the flagpole pinned eight blue stones reliefs that illustrate the historical periods of the country as well as the customs and traditions of Ha Giang people.

Besides, there are eight copper drums attached above. To reach the top of the flagpole, visitors must pass 389 stone steps, and they can admire the majestic landscape of northwestern Vietnam on the way to the top.