Hello there! My parents are going on a trip to Europe this summer and will be spending a week in Germany the 2nd week in September. They are technologically challenged so I am doing some research into Germany for them and thought I should turn to some experts. They really want to be adventurous and sight see (castles, WWII sights, etc.). They don't drink beer, so no need to suggest anything for that. What are some of your suggestions for things to do? Anything is helpful.