I spent several months in Berlin a couple years ago and was particularly fascinated by the wall. There are many exhibits. To the north is a recreated section

I spent several months in Berlin a couple years ago and was particularly fascinated by the wall. There are many exhibits. To the north is a recreated section of the wall, with a guard tower, etc and a museum across the street. Near checkpoint charlie is a good museum of people's attempts to escape the wall. Unfortunately it's usually overrun with tourists and tough to get thru- so physically packed with bodies. Berlin has done a good job of memorializing the wall, and you will see its impact wherever you go in the city. To be honest, if you have any geographic flexibility, go spend 3 months in berlin doing a startup-- great startup scene, great place in europe, wonderful city, and lots of stuff worth experiencing. There's even a section of the metro that was closed for 40 years because it was in east berlin... that you can now see. We stayed in east berlin in an AirBnB apartment. It was winter and despite all the snow I loved it. Alexander Platz has the Festrum(sp) a fantastic, east german version of the space needle, well worth visiting. If you get homesick the Sony theater in Potsdamer Platz runs american movies in english. But above all, the wall really made a huge impression on me. A much bigger impression than, say, stonehenge.