Fire Guts Hitler's 'Eagle's Nest' in the German Alps, One Suspect Detained

A fire has completely gutted the Eagle's Nest, Adolf Hitler's notorious Nazi-era mountain retreat in Bavaria, prompting an overnight emergency operation involving about 200 firefighters, German police have said.

No injuries were reported at the building, known locally as the Kehlsteinhaus. Police said a 'suspicious person' had been taken into temporary custody and investigators were examining whether that person was connected to the blaze.

According to police, the fire alarm was triggered by a smoke detector at about 9:50pm on Friday. Emergency crews could see flames rising above the building as they approached and found it 'completely ablaze' on arrival.

The retreat's remote Alpine location, at an altitude of more than 1,800 metres (about 6,000 feet), complicated efforts to extinguish the fire, police spokesperson Lisa Maier said.

Authorities have not announced a cause. German media reported that investigators suspected arson.

The newspaper Bild said emergency responders had encountered a motorcyclist travelling towards them on their way to the scene, and that he was subsequently detained. His possible involvement remained under investigation.

The structure, a tourist attraction for decades, was probably not salvageable, police also indicated — meaning the fire's destruction was close to total.

Maier said inquiries were continuing, with police planning a news conference later on Saturday.

Built between 1937 and 1938, the stone-and-granite retreat stands on the Kehlstein mountain above Obersalzberg, near Berchtesgaden in southern Germany.

Designed as a monument to Hitler's rule and a setting for receiving foreign diplomats, it offers sweeping views across the Bavarian Alps. Hitler himself visited the resort.

The site, which remains part of the legacy of Nazi Germany, survived World War II undamaged. It has operated as a restaurant since 1952 and also houses an exhibition examining its Nazi history.

Attention will now be on where the investigation into the detained man leads, and on what police reveal about the true cause of the fire at their news conference.