The Kehlsteinhaus is an awesome view point with a major historical backround. It was built in 1938 by the Nazis. Basically just to impress Hitler.
You arrive at the parkinglot just outside of the city Berchtesgaden. From there you can either buy a bus ticket to take a ~20 min drive up or you can choose to hike, which will take you approximately ~4 hours.
Once arrived you can choose again. Take the elevator or once again choose to hike to the Kehlsteinhaus. Hiking up will take you around 45 min.
Finally on the top of the Kehlstein at 1834m (6017feet) above sea level you will have a breath taking view!
Besides the view you can take a small hike for ~1 3/4 hours.