A fire ravaged the Kehlsteinhaus in Berchtesgaden, a former Nazi-era guesthouse known as the Eagle's Nest. German authorities detained a suspect after the incident. The building, connected to Hitler's Obersalzberg, was severely damaged in the blaze. The arrest was made following reports of the fire, which affected the historic retreat. The incident has created apprehensions over the protection of sites associated with the Nazi regime.