Gladys Roy and Ivan Unger play tennis on the wing of a biplane in flight, 1925
One of the many things you never thought would happen is seeing people playing tennis on the wings of an airplane that is traveling at an altitude of 1,000 meters.
But it really happened. Over the city of Los Angeles in 1925, two daredevil women, Gladys Roy and Ivan Unger, performed the action.
Ivan Unger and Gladys Roy after the monumental performance, 1925
In fact, they didn't really play tennis. They just acted like they were playing tennis on the wing of the biplane. At that time the biplane's speed was not too fast so wing walking was often carried out by daredevils.
Pictures of them playing tennis on biplane wing quickly spreaded around the world through the press, the picture made them famous and brought them fortune. Even today we can still find people selling the photo on the internet.