Question: when did the arc de triomphe start getting built
Answer: 2950 Construction started 15 August 1806 Inaugurated 29 July 1836 Height 50 m ( 164 ft ) Other dimensions Wide : 45 m ( 148 ft ) Deep : 22 m ( 72 ft ) Design and construction Architect Jean Chalgrin , Louis - Étienne Héricart de Thury