Cheongnyangni 588
Cheongnyangni 588 was a red light district in Seoul, South Korea near Cheongnyangni station. Cheongnyangni is often referred to as "Oh Pal Pal", meaning "five eight eight" in Korean due to a bus which once passed through the area.
The Cheongnyangni district is mentioned in several works of fiction and non-fiction as the setting for a crime drama Seoul: Lost in the big city (ISBN 978-0956476517) and also in the book In Search of Life (ISBN 978-0956476500).