Adolf Hitler's mountain residence in the Alps, known as the Eagle's Nest, caught fire on the night of Friday, October 23.
Police in the southern German state of Bavaria arrested a 33-year-old German man following this fire.
This residence was one of several buildings in this area that were used by the Nazi dictator and his entourage during World War II.
Hitler also used this area as a backdrop for propaganda films that showed him as a lover of animals and nature.