[Rick Lee]

This could become a long thread and I've been to plenty of them. But I'll just list the coolest or most moving ones for now.

Warsaw Ghetto

Auschwitz

Colditz Castle (where the POW's built the glider plane)

Lidice (village near Prague wiped off the map as reprisal for Heydrich's assassination)

Braunau am Inn (birthplace of Hitler)

Cecilienhof (site of the Potsdam Conference)

Museum on Japanese Aggression, Nanjing, PRC (Rape of Nanking)

Unfortunately, I visited most of these places before I had a digicam, so not many photos.