Playgrounds and things to do with kids in Milan

Fifteenth-century castle with towers, a dry moat and a huge courtyard that's free to walk into.

One of Europe's oldest aquariums, in an Art Nouveau building covered in tiled sea creatures, with octopus, moray eels and fish from Italian rivers and seas.

The city's oldest park, with three playgrounds, duck ponds, a carousel and pony rides, and the natural history museum and planetarium inside.

Children's museum in a round cloister, with play exhibitions split by age, from a reuse workshop for toddlers to nature rooms for ages 6 to 11.

Italy's biggest science museum, with full-size models of Leonardo's machines, historic trains, a real submarine and hands-on labs for kids.