Do Cuong
Google
The main entrance to the Imperial City is the Ngo Mon Gate, which faces the Flag Tower. The central path with its yellow doors and the bridge over the lotus pond was just for the emperor. Everyone else had to use the gates on the sides and walk around the pond. On top of the gate, there's the Ngu Phung Pavilion; you can't miss the huge drum and bell up there.
It's cool that the gate's name and general look are the same as the first gate of the Forbidden City in Beijing. This is also where the emperor would appear for big events, especially to announce the lunar calendar. And get this: the Nguyen dynasty actually ended right here on August 30, 1945, when Emperor Bao Dai gave up his power.