Aachen (1996)
RollAix Performers on ice, RWTH Aachen U. (2009)
Russian circus performer (2009)
Würzburg (1931)
Wheel gymnastics (German: Rhönradturnen) is a form of gymnastics that originated in Germany. Wheel gymnasts do exercises in a large wheel or hoop known as the Rhönrad, gymnastics wheel, gym wheel, or German wheel, in the beginning also known as ayro wheel, aero wheel, and Rhon rod.