These are tracks with passenger cars and engines at the historic, refurbished Union Station in Portland, Oregon. I took the photo yesterday, a sunny December Sunday, with my Panasonic DMC-G1 camera and a 20mm 1.7 lens that I am just getting acquainted with. I'm standing on a pedestrian bridge over the tracks. It is a suspension bridge that bounces up and down every time someone walks over it, which they seemed to do whenever I tried to focus my camera. Two of Portland's bridges are seen in the background.
This is an sRGB PNG file.