Today we hit two parks - Sommerland Syd and Legoland.
Sommerland Syd isn't a very big park, but it seems like a nice place for locals to spend an afternoon. It's mostly a water park with a few rides. Seems like a perfect place for a school outing, etc.
They are also home to the world's first Vekoma Invertigo which oddly enough was great!
Next was Legoland Billund which is the "original" Legoland (well, after they left Hansa Park) and it's probably the nicest of them all. It's at least bigger than the other two I've been to and seemed to have the most attractions.
Their "Robocoaster" ride was very impressive being all indoors and not only allowed you to select the level of intensity, but also allowed you to select what maneuvers your Robocoaster arm did.
EDIT - Theme Park Review featured in German Newspaper! Check it out: