This "fast variation" of the traditional merry-go-round is part of the entertainment at Navy Pier (Chicago, USA). This photo is my present to my friend Benja: Happy 29th Birthday!!!
Please see it at full size (click on the image), Picasa introduced too much artifacts at this small size.
EXIF. ISO: 200, Exposure: 1/6 sec, Aperture: 7.1, Focal Length: 17mm, Flash Used: No.