Das Fest, Karlsruhe
Visit 'Das Fest' (the festival). It's a big open air with famous (3 international head liners every year) and not-so-famous bands from Europe and all the world.
Previous line-up includes George Clinton, New Model Army, Marla Glen, Tito & Tarantula, Simple Minds, Heather Nova, Guano Apes, Faithless, Jovanotti, Fun Loving Criminals, ...
The festival is organized by the cities youth committee of Karlsruhe and IT'S TOALLY FREE.
The open air lasts for 3 days - in 1999 they counted about 200,000 visitors from all over Europe. The atmosphere is very good: no violence, it's an all family's Rock 'n Roll / Independent open air concert.
They even offer children's program, theater stage , beach volleyball, beer garten etc.
The location is one of the best I've ever seen for an open air with such a big stage: rising from the stage to three steep grasy hills. Superb sound experience.
Try some of the food and the (usually locally brewed) beer.