One of the last remaining structures connected to Adolf Hitler's inner circle was largely destroyed by fire Friday night.The Kehlsteinhaus, known internationally as the Eagle's Nest, caught fire at approximately 9:15 PM local time on a remote peak above Berchtesgaden in the Bavarian Alps, setting off smoke alarms that summoned some 200 emergency responders. The building's extreme location at 6,017 feet, accessible only by specially designed buses through narrow mountain roads and a single tunnel, severely hampered firefighting efforts. The blaze burned for more than 12 hours.By Saturday morning German police confirmed the building was "unlikely to be salvageable." A...