Die Glocke (Germania) (WW2)

Origins
Die Glocke, or "The Bell" in English, was a series of projects and experiments conducted in Nazi Germany with the goal of achieving a large amount of goals, such as time travel, space travel, alien contact, superweapons, and others. The project began in 1937 on January 7 when Hitler began planning his invasion of Europe. Die Glocke didn't make much progress until September 3, 1941 when the construction of centrifuges was completed and April 10, 1941 when the first discovery of thermal diffusion and how to use it was made. Die Glocke was named after a central project with the same name that began at the same time, involving a large bell-shaped structure.

Location
Die Glocke was carried out in a number of locations including underground research labs in Berlin and near Austria, labs in Antarctica and at the South Pole, where most of the discoveries were made, and in German concentration camps.

Einstein's Contribution's
After leaving the USA to come to Germany in 1942, Einstein was contacted by Hitler to work on Die Glocke, and Einstein agreed only to come look at what Hitler had for him to work on. Upon his arrival in the Berlin Bunker, Einstein was unimpressed by much of what he saw. Upon visiting the Austrian Bunker, he was immediately blown away by the work that had been done thus far on the original Die Glocke project and advancements for the Luftwaffe. Einstein agreed to work on the German atomic bomb in exchange for access to all of Die Glocke and full control of its development.

On October 2nd, 1943, the German atomic bomb was completed and began being mass produced.