Sawada Mansion is a residential complex located in Thistle North Town, Kochi City, Kochi Prefecture, Japan, built by a couple who are not professionals in reinforced concrete construction.
The building is a steel-framed reinforced concrete structure with five floors above ground and one basement floor (partially six floors above ground), with approximately 70 units and approximately 100 residents.
It is also called "Japan's Kowloon Castle" because of its appearance, and is one of the most famous places for architectural exploration. Commonly known as "Sawaman" or "Gunkanjima Mansion.