July 10, 2014 7:30 AM EDT

A new exhibit hopes to remove the taboo of “potty talk” — or flush it away — to raise awareness about pressing sewage disposal issues worldwide, as the UN estimates 2.5 billion people globally do not have access to proper sanitation.

People who visit The National Museum of Emerging Science and Innovation in Tokyo don hats shaped like poop and go down a slide inside a giant toilet that is supposed to simulate the journey of human excrement. Models of different toilets around the globe are also on display.

As one visitor summed up the show’s draw, “It’s not every day that you can become feces.”

The exhibit is open until Oct. 5.

Write to Olivia B. Waxman at olivia.waxman@time.com.

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