The first Legoland was built in Denmark in 1968.
Now that the educational part is over, let's talk about how GREAT Legoland is for wee little kids such as Jack. They have many wonderful toddler rides that go up and down, and side to side, sometimes spinning while doing either of those; it isn't good for motion-sick people.
My personal toddler attraction of choice, was the Driving school, where our children ages 3-6 got to operate and drive their own vehicle, by themselves, in attempt to drive in a looped track and get their "drivers license." It goes as follows.
Kid and parent go through the gate and choose a car.
Kid gets buckled in car, parent leaves to stand behind gate.
Attendant pushes button that makes gas pedals work.
12 cars start swirving around and 60% of them immediately hit something (be it the wall, another car, or attendant.)
ONE attendant goes from stuck car, to stuck car, freeing the vehicle.
3 seconds laters all cars that were once free, are stuck again, and await the attendant.
Parents sit behind gate and laugh.
Attendant continues her way around the loop, freeing stuck vehicles and avoiding the "good" drivers. (All the 6 year olds.)
Attendant pushes a big button, everyone stops, and we all clap as she passes out each drivers license to the undeserving drivers.
MAN. It was funny. But Jack thouroughly enjoyed each ride. He did a really good job waiting in line (though there weren't ever any really long lines..)
I highly suggest paying a visit.