There is a lot to do in Copenhagen for kids. There are beaches nearby, amusement parks in the central - and even art especially for children. All places can be found at the City Map.
Tivoli
Tivoli is probably the most popular attraction for kids. With a Multi-ride ticket they can try all 28 rides in Tivoli as many times as they like. In the meantime you can sit on a bench enjoying the flowers and the music.
They should also not miss The Pantomime Theatre with the white faced Pierrot. Something all children will enjoy.
Tivoli - a great place for kids at all ages
Read more at the Tivoli website.
Experimentarium
The Experimentarium is "living science" with the use of all five senses. Here the kids can experience 260 interactive exhibits on nature and technology, subject-centred around a series of scientific areas. Furthermore there are frequently changing exhibitions. Fun for both kids and adults.
More at the Experimentarium website.
Copenhagen Zoo
The Copenhagen Zoo is home to 3,300 animals and 264 species - from Greenland to Africa. Especially for kids there is a Children's Zoo, where they can pet animals like goats and rabbits or watch the show at the children stage. In the middle of the park there is an Eiffel-like tower (40m/131 ft.) with a nice with of the surrounding Frederiksberg.
The Children's Museum of Art
At the National Gallery ("Statens Museum for Kunst") there are exhibitions at children's eye-level. Here the kids can visit the workshops and create their own works of art by working with clay, paper, paint and other fun materials. Furthermore there are so-called "Children's stations" where they can experience the artwork in new and playful ways.
The Children's Museum of Art at the National Gallery
More information at the National Gallery website.
Beaches in Copenhagen
In the middle of the city there is the harbour baths with their clean water at Islands Brygge and Fisketorvet. Children's basins are to be found in both places.
If you want a real beach with sand, you can take a trip to Amager Beach Park with many activities in and around the constructed shallow lagoons. A really nice place in the summer.
You can walk to the harbour baths, and if you want to visit the Amager Beach Park, the easiest way is to take the Metro to the "Amager Strand" station and walk the last part.
Denmark's Aquarium
On a rainy day Denmark's Aquarium in Charlottenlund, north of Copenhagen is a nice place to be.
With 300 colourful fish, sharks, electric eels and octopuses, there is a lot for the kids to see. Maybe the most fascinating is the piranhas, that flense anything in less than a second.
Watch the colourful fish at Denmark's Aquarium
The kids can also touch some of the aquatic animals or see when the fish get fed (only during weekends and holidays).
Read more at the Denmark's Aquarium website.