Warning:
This site will teach you all about the Nazi Concentration camps, which were very sad and bad places that humans were sent to during World War II if they didn't meet Hitlers criteria. There were about 18 million deaths at these camps. This site has lots of information if you would like to learn more, but beware that this is a very sad and grief filled topic. So if you don't want to learn about this horrible, very sad and scary topic then do not continue.