Floating staircase
This "floating staircase" was designed by Jordi Vayreda of Jordivayreda Projectteam (Spain). It may look dangerous, but that's only because the guard-rails are made of the same invisible material as the risers. Link (via Neatorama)
Where not otherwise specified, this work is licensed under a Creative Commons License permitting non-commercial sharing with attribution. Boing Boing is a trademark of Happy Mutants LLC in the United States and other countries.