An abandoned mall in Bangkok, Thailand, has been gathering a lot of tourist attention. It may look empty from the outside, but what lies inside leaves visitors in awe.
The mall closed in 1997, and a fire in 1999 left it roofless. A huge amount of water accumulated inside after countless rainy seasons, making it a cesspool for mosquitoes.
To avoid an outbreak in the area, locals decided to breed freshwater catfish and koi fish in the small “pool” inside the mall building. These fish would eat the insects, and they multiply in great numbers as well.
Now this mall is one of largest natural aquariums in the world.
“Without good knowledge of Bangkok geography, one would be hard-pressed to believe anything interesting lies behind this gate,” a blogger wrote. “At some point in the early 2000s, 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,” he added.