There's something inherently dramatic, I think, about stairs. We see them every day, and they're necessary for, you know, going up and down, but if you take a staircase and isolate it it becomes this really beautiful, sculptural thing. Lots of architects have taken this idea and played with it, producing elegant (and occasionally terrifying) results. (Although of course those things aren't mutually exclusive.) Feast your eyes on these 17 examples.