City trips with kids aged 3-5

A full half day that works from babies to ten-year-olds, with indoor play if it rains.

An hour to ninety minutes indoors, fully step-free, right next to the London Eye.

One hour sitting down while Paris goes past. The best rest stop on a walking day.

A full day out by itself. Under 3s enter free and most toilets have changing tables.

The zoo inside Villa Borghese. Shady, stroller-friendly outdoors, and the safest bet with under-6s.

Hands-on play in fixed 1 h 45 sessions. Book ahead at weekends. Built for ages 2 to 10.

Free for under-13s and flat enough for a stroller. The easiest first day in Tokyo.

Small, indoor and stroller-friendly, at the foot of the Skytree. Ninety minutes is plenty.

Five floors where touching everything is the point. Same price from age 4 up, free under 4.

A leafy city zoo a tram ride from the centre. Easy with a stroller, pricey at the gate.

Shark tunnel plus a hands-on children's area. The easiest win in the city for under-6s.

A full day on flat paths, with playgrounds, a farm and a nursing room with a microwave.

Zoo, dolphinarium and aquarium on one ticket. It is a big site, so pick a half and stick to it.

A city amusement park one metro stop from the zoo, with a full zone for small children.

One huge central tank you keep coming back to, ramps and lifts all the way, and cheaper after 4 pm.

A full day out right on top of a metro station, but the cable car does not take strollers.