Stair Porn

here.

I'm looking forward to seeing the bespoke new staircases you're inventing for your artists - if you have found any good images or sites of staircases (or interesting things generally) please upload them.

Here's a section of the Etoile Metro Station in Paris, drawn in 1895. The spiral staircase is not in section, unfortunately.

(from: http://www.corbisimages.com/Enlargement/42-15819058.html)