Chicago Union Station at night. Last time I took a photo from this angle, the bus station was a vacant lot. Nothing stays the same forever, so take a picture when you have the chance. Even if it seems like it doesn't ever change, one day it will.
A continuously growing album of photos that IMHO reveal the awesome and seldom-seen beauty of the railroad world from the dimming of day to dawn's early light! From dusk to dawn, trains roll on! (I'm still finding gems of sunset-to-sunrise surprises!)