If your kids can't get enough of trucks and dirt, head to Diggerland USA, a construction-themed amusement park in West Berlin. Diggerland is a child's construction-site fantasy, with a setup designed to fulfill the dreams of little builders ages 2 and up.
My 2-year-old son and I recently took the ride to West Berlin to see what it was all about, and we had a blast. However, we'll probably wait another year before returning so as to avoid the temptations of the rides he wasn't big enough to go on just yet. That said, if you're looking for a unique alternative to traditional amusement parks this summer, a trip to Diggerland is definitely in order.