Thank you for helping us by reporting bad content.
So, this idea is from Leandro ErlichJ.
This is a pool with two pieces of glass separated by 30 cm filed with water, and them more water on the top of it. This was created for the Japones Museum XXI century of contemporary art Kanazawa.
This pool can be visited on the inside creating the ilusion that there are people under water.
A really cool idea right?
*the image is not mine*