Seen this last year shortly after release, think on the day that it was exactly 70 years ago actually
Visited one of the concentration camps myself in 2010. It was like 25 degrees celcius easily, but when you walk around there you cannot escape from a weird feeling of dead, sadness and just cold.., you hear the stories of people who know it in detail... you feel amazed that people can do such things.
Everyone who has not visited one yet... if you ever come to Europe or live in Europe but have not had the chance yet... do not doubt and visit.
Probably little too far to say live changing experience... but very, very eye opening and something to never forget.