A fire devastated 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, associated with Hitler's Obersalzberg, was severely damaged in the blaze. The arrest was made following reports of the fire, which impacted the historic retreat. The incident has sparked worries over the protection of sites linked to the Nazi regime.