This photo of the midway at the Florida State Fair in Tampa was taken just at the blue hour. The long exposure provides the spinning effect of the ride and the movement of the pedestrians.

Nikon D800
Nikkor 2.5 24-70mm lens
1.4 sec. at f/16
Focal length 24 mm
ISO 100
Tripod with shutter release, "mirror-up" setting on camera