New World shopping mall, a four story former shopping mall. Originally constructed as an eleven story building. It was found to be in breach of old town Bangkok’s four story limit on building heights. The top seven floors were demolished to adhere to building codes in 1997. In 1999 the mall burned due to suspected arson committed by a competitor in the area. The building has remained abandoned ever since. Not having a roof, the basement floor remains under several feet of water year round.
At some point in the early 2000′s an unknown person began introducing a small population of exotic Koi and Catfish species. The small population of fish began to thrive and the result is now a self-sustained, and amazingly populated urban aquarium.
More pictures at the link.