I went on two walking tours: the Famous Insider Walk with David, and the Sachsenhausen Concentration Camp tour with Jesse.
I don't want to give too much away, but the Famous tour takes you to locations from the Prussian Empire, the Nazis, the Communists, and the Jewish Holocaust Memorial.
The concentration camp tour takes you on a train ride just outside Berlin to a concentration camp, the first site the SS designed and built to hold prisoners to use as forced labor.
Both tours were a bit of a hike, so if you don't like walking this probably isn't the tour for you. But if you do like walking, both guides I had were super friendly and really knew their history. They also managed to keep the group together, which at times looked like it was harder than herding cats. So big props to the guides for that.
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