Vietnam Monday, April 26, 2010 Hanoi Hanoi -  Hà Nội —   Centrally-governed city   — Seal Provincial location in Vietnam Coordinates:  21°2′0″N   105°51′00″E Country   Vietnam Central city Hanoi Districts 29 Founded, Capital of the  Đại Việt  Kingdom 1010 Capital of Vietnam September 2, 1945 Area  -  Centrally-governed city 3,344.7 km