In 1933 the quiet mountain village of Obersalzberg (3km from Berchtesgaden) became the second seat of Nazi power after Berlin, a dark period that’s given the full historical treatment at this excellent exhibit. It documents the forced takeover of the area, the construction of the compound and the daily life of the Nazi elite. All facets of Nazi terror are dealt with, including Hitler’s near-mythical appeal, his racial politics, the resistance movement, foreign policy and the death camps.
A section of the underground bunker network is open for perusal. Hourly bus 838 from Berchtesgaden train station will get you there.