Legoland (Germany) is just an hour from my place, between Stuttgart and Munich. It costs almost the same for adults (30 Euros) and children (25 Euros) and is worth a visit. But be prepared to pay not just the entry fees but also spend on ice slushes, pop corn, sausages and more importantly - the wide range of Lego merchandise!
The queues were long though maybe not as long as in Disneyland and I think the rides were great when you have young children (my 2.5 and 4 year-olds could do most of them).
There were a few roller coasters and the Bionicle ride was rather innovative - you could programme the speed etc (so even my mom went on it). I love the Lego mini-world, these people are geniuses and artists.
We brought foie gras sandwiches to picnic in the park and bought some ice-cream, pop corn etc sur place. I must say that compared to most other parks, the prices for tit-bits etc were reasonable. The variety was quite decent too.
Only problem was that the opening hours were quite short (10h-19h, but all rides closed at 18h) and we couldn't finish the park in a day. Didn't even catch any shows, for example. Also, the parking was quite steep at 4 Euros per vehicle.
Those living in Germany, watch out for free entry coupons for children (though each child will have to be accompanied by a paying adult) on milk bottles (e.g. Landliebe), Lego boxes etc. Otherwise, if you buy online (http://www.legoland.de/), you'll get 10% discount though you'll need to wait a week for your tickets to reach you.