Olympia is a 1938 film by Leni Riefenstahl documenting the 1936 Summer Olympics, held in the Olympic Stadium in Berlin, Germany. The movie was produced in two parts: Olympia 1. Teil — Fest der Völker (Festival of Nations) and Olympia 2. Teil — Fest der Schönheit (Festival of Beauty). A mass-gymnastics film fragment can be seen in Fest der Schönheit at 32:16 min.
View Part 1 here.
View Part 2 here.