We just had to show you these pools. They might not be quite what you would build in the backyard, but you have to dream, don’t you?

From space-age microgravity simulators and shark tanks in casinos to blood-red hotel pools and even pools filled with beer, chances are that if you can imagine it, somebody has already built a pool out of it. We live in a beautiful world.

Click through the gallery above to see 10 pools you won’t believe really exist…