As you know, I like bold constructions. And among these, hanging pools are one of my preferences. You will find at the bottom of this post some references.
At first, I wanted to introduce you to the crazy project of an architect. This is to make a swimming pool hanging over a Norwegian fjord.

Some balconies are arranged above this pool to enjoy the show:

More:

Pool in Norway

Also a swimming pool hanging in Honolulu:

More:

Pool in Honolulu

And finally, a swimming pool which is at the top of a skyscraper, completely transparent and without rim, what give you the thrill:

More:

Pool in London

In addition to this post:

• Roofpool
• Pool up and down
• A swimming pool in the sky
• Walking in the air
• Cars in the air