miércoles, septiembre 15, 2010

Tread and riser

Tread and riser: "


Spiral staircases, Bugis Girl runs up San Francisco's 16th Avenue Tiled Steps Reflection and Shadow - Spiral Staircase

bcc Berliner Congress Center I

Crazy staircase at the KPMG Building in Munich

Photos from irq506, shimmertje, Abe K, Canadapt, yushimoto_02 [christian], and Alaskan Dude.


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