What is "potongmun"

Potong Gate is the western gate of the inner complex of the walled city of Pyongyang ( Pyongyang Castle). It was originally built in the sixth century as an official Koguryo construction, and was later rebuilt in 1473. It features a granite base topped by a two-story pavilion. The gate's pavilion was destroyed by American bombings during the destruction of Pyongyang in Korean War, but was later reconstructed in 1955.

It is listed as National Treasures #3 in North Korea.