The Swing Carousel, also known as the Wave Swing, at the Maryland State Fair is always fun to ride and to photography.
"The Chair-O-Planes premiered in Germany in 1972, designed by Zierer and built by Franz Schwarzkopf. In 1974 the first portable unit debuted under the same partnership. This type of swings ride was present at even the earliest amusement parks. At Idora Park in Oakland, California, in 1908, the ride was called Flying Swing, but appears to be the same principle." (Wikipedia)