Hongsalmun is a red spiked gate that is found at the entrances of sacred places in Korea. Such sacred places include shrines, tombs, and schools. It features no roof or door.
The gate features two round vertical posts and two rectangle posts that run horizontally and parallel to each other. Red spikes run vertically from the lowest horizontal post to the top level of the vertical posts.
The top features two symbols. The first symbol is a three spear trident known as trishula. The second symbol is taegeuk, which is the red and blue yin and yang image that appears on the South Korean flag.
Hongsalmun means “gate with red arrows”, which refers to the red spikes found at the top.