Namdaemun was completed in 1398 and helped to keep Siberian tigers out, which are native to Russia, Northeast China, and possibly North Korea.
The city gate, made of wood and stone with a two-tiered, pagoda-shaped tiled roof, was completed in 1398 and originally used to greet foreign emissaries, control access to the capital city, and keep out Siberian tigers, which have long been gone from the area. The Siberian tiger is a population of the Panthera tigris tigris subspecies that is native to the Russian Far East, Northeast China, and possibly North Korea. 
