This is a shot of "The Big Dam Bridge". So named because it is (The)? longest pedestrian bridge in the US. It is built on top of a dam on the Arkansas river.At night the lights rotate colors and if your shutter speed is just right you can get all the colors in the spectrum. ROYGBIV, if you remember from high school science class.
Canon 1DmkIII,Iso 1600,1/5 sec, at f4.0. 70-200 f4L at 81mm.