In Copenhagen, take advantage of the city's cycling culture and bike with your kids to dazzling Tivoli Gardens. This grand old amusement park -- with 20 acres and countless ice-cream cones of fun -- has been running since 1843. It's like a Hans Christian Andersen theme park, with games, marching bands, and rides ranging from vintage cars to roller coasters to a Ferris wheel that resembles a clock. There's something happening every half-hour. Free concerts, pantomime theater, ballet, acrobats, puppets, and other shows pop up all over the park. With or without kids, this place is a true magic kingdom.