A man in Germany was arrested on suspicion of arson this week after he allegedly set fire to a mountain retreat built for Adolf Hitler.

The fire broke out at the Eagle’s Nest in the Bavarian Alps on Friday evening, and firefighters battled the flames against strong winds.

The 33-year-old suspect is a German citizen who showed signs of mental illness and was taken to a psychiatric facility, authorities said.

But they aren’t ruling out a political motive for the arson due to its notorious history.

He was seen heading down the mountain on a motorcycle.

The Kehlsteinhaus, as it’s called in Germany, is more than 6,000 feet above sea level and accessible by an elevator during the day for tourists.

The building has operated as a seasonal restaurant and tourist attraction since 1952, and has an exhibit on its history.

Hitler rarely used the retreat.

He did frequent his Berghof residence in the same area, which was blown up after the war.

“We’re not going to leave a ruin there,” Bavaria’s interior minister, Joachim Herrmann, told reporters at Eagle’s Nest. “I think we will be able to find a sensible solution.”

He added: “It is important that we continue to do the work of remembrance.”

No injuries have been reported.