Copenhagen Family Fun
Tivoli, The Blue Planet aquarium, Bakken amusement park and a deer park, a relaxed family route.
Built around the kids: on day one, spend the afternoon and evening at Tivoli. On day two, visit The Blue Planet, the largest aquarium in Northern Europe, then go to CopenHill and Reffen. On day three, take the S-train to Bakken amusement park and the Dyrehaven deer park. On the last half-day, see Kastellet and the Little Mermaid before leaving. Stay in Østerbro, a quiet neighborhood with plenty of parks. Plan only one or two highlights a day, leaving time to rest.
Tivoli and Bakken both close seasonally; check opening days before you go.
Day by day
Day 1 · Tivoli After Arrival
Take the train from the airport about 15 minutes to Central Station; Tivoli is right across from the station. Take a bus back to Østerbro in the evening.
Rides cost extra; if you plan to ride a lot, buy the unlimited-ride wristband.
Stay: Østerbro
Day 2 · Aquarium and CopenHill
Copenhagen（The Blue Planet (National Aquarium Denmark)、CopenHill (Amager Bakke)、Reffen Street Food Market）
Take metro line M2 to Kastrup station, then walk about 10 minutes to the aquarium. In the afternoon, take a bus or harbour bus to CopenHill and Reffen.
Tickets are cheaper when bought online; the aquarium has a children's playground outside.
Stay: Østerbro
Day 3 · Bakken and the Deer Park
Copenhagen（Bakken & Jægersborg Dyrehave）
From Østerport, take the C line S-train about 15 minutes to Klampenborg, then walk into the Dyrehaven deer park.
Entry to Bakken is free; rides are paid per ride. Picnics are allowed in the deer park.
Stay: Østerbro
Day 4 · Kastellet, the Little Mermaid and Nyhavn
Copenhagen（Kastellet、The Little Mermaid、Nyhavn）
Walk from Østerbro to Kastellet and the Little Mermaid, then to Nyhavn to take a canal boat; afterward take the metro to the airport.
The canal boat passes many low bridges; have children sit down rather than stand.