• Indoor houses for rainy days: the Arctic Ring, Tropical House, Elephant House, Hippo House and Zoolab all keep you dry
• Five playgrounds around the zoo; the one by the classroom opens only at weekends and in school holidays, and the leopard slide is for ages 6 and up
• No re-entry on one ticket, and the restaurants and shop are inside the gates, so plan to eat in the zoo

Copenhagen Zoo, Zoologisk Have to locals, keeps elephants, lions, tigers, hippos and chimpanzees, plus polar bears you watch underwater in the Arctic Ring. In the Kids' Zoo, kids stroke goats and meet pigs, llamas and cows, right by the zoo's largest playground.

The Tropical House, Elephant House, Hippo House and Zoolab (with a leafcutter ant colony) are all indoors, so it works on a rainy day too.