Super cool way to solve a space problem
 

http://www.boingboing.net/2008/01/19...ic-stairc.html

(creative staircase)

Cool idea! But why are you looking at stairs at 1:00 in the morning? ;)

Those are very dangerous looking stairs. I wouldn't want them!

Read the comments to see how common such stairs are in older construction (including being part of the reason you can no longer tour the upper floors of Monticello). Found that little unknown bit of architectural learning interesting.

The real beauty of it is, when you're drunk they look straight.

While alternating tread stairs (also called "monk's ladders") have been around forever, and are quite safe, they are nothing like the ones in the OP. Those are mayhem just waiting to happen!

Just a different visual presentation of the same thing.

I was just cruising boingboing, and that was on there. I wasn't specifically looking for stairs at that hour of the day.

Same concept, yes; but a horrible design. The triangular treads and sharp edges are an ergonomic disaster. And on top of that, no handrail!

Oh, I definitely agree with that. I'd hate to be bringing down a box of old books out of that attic.