Copenhagen is filled with parks and gardens where kids can run around and play, but there are also some fun places for them to visit, and activities they can try. When it comes to creating fun content for the youngsters, the Danes are all about exploring and learning through doing, which happens to be fun even for adults. Apart from the few venues we have selected, it is important to note that most of the museums and castles don't charge the entrance fee for children up to 17 years old.