What is it, you ask? Yeah, I was confused at first too.
It's an awesome installation using recycled plastic bottles by hanging the bottles at different string lengths and filling them with just about an inch of colored water.
I believe in this instance it was used as a carport. But it would look really cool on a porch or sidewalk, or really any outdoor space! Kids would probably love it too. :)
But a prior warning, this is no easy weekend project. Check out the detailed planning behind it here.
*Discovered from Treehugger
**Photos from Behance