It makes an Olympic swimming pool look like a puddle.

As if Dubai wasn’t filled with enough record-breaking attractions, the United Arab Emirates metropolis is now home to the world’s deepest pool, complete with an underwater city, caves and more.

“An entire world awaits you at Deep Dive Dubai, the world’s deepest pool,” wrote crown prince of Dubai Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, on Instagram. He was one of the first to visit the engineering marvel on July 7.