So we couldn't go in there, but we did visit Obersalzberg, the Nazi Documentation Center. This was a pretty intense museum that showed how Hitler gained control of Germany, and then what happened after he had control. The purpose of this place is clearly to show the horrors of the Nazis and not glorify them. Based on the pictures inside, the museum definitely succeeded. Underneath the Documentation Center are the bunkers that the Nazis built for their last stand. This was all fairly impressive to see:
After seeing that, we decided to visit nearby Lake Konigsee. To get to the lake, you take a bus from Berchtesgaden and then walk through a typical (or at least what I would think of as typical) small Bavarian town. It's a beautiful lake with views of the Bavarian Alps all around. We got there too late to actually go out on the lake, but it was still impressive to see.
Great views of the mountains all around as well.