Everything, well it's a pretty big park with a lot of rides. It's situated in Rust, a small town in the south of Germany. Europa Park is divided in lands themed to European lands. They have Italy, Greece, Spain, Portugal, Russia, Switserland etc. The park is owned by the Mack family, which is also a big ride manufacturer. My favorite rides there are:
- Poseidon, a Mack watercoaster themed to a Greek temple, similair to Journey to Atlantis in Sea World Orlando
- Silver Star, Europe's second highest coaster. A B&M out and back design.
- Blue Fire, a launched Mack looping coaster which onboard sound.
- Woodan Timbur coaster, a huge GCI wooden coaster with a Viking theme.
- Atlantica Super Splash, a Mack shoot the chutes water ride with a Portugese theme.
- Abenteuer Atlantis, a shoot em up dark ride, like Buzz Lightyear.
I don't know if I'm allowed to place a link here, but here is a detailed trip report with lots of pics:
http://forum.nolimits-exchange.com/comments.php?DiscussionID=2861