Travelling with a baby or toddler (0-2)

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.

Indoor, pushchair-friendly and next to the Eiffel Tower. A solid rainy-day plan for under-6s.

Animals grouped in five habitat zones. Allow at least two hours, and bring a picnic.

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

Rome's big free park: rowing boats, bike carts, a playroom and paved paths that suit strollers.

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.

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

The city's main park, free, with playgrounds and a paddling pool a short walk from the museums.

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.

The city's big park: rowing boats, playgrounds and weekend puppet shows. Free to enter.

Seventeen play areas along the river and water jets in summer. Flat, free and stroller-easy.

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

Free neighbourhood park with playgrounds, a duck pond, a café and toilets, right on tram 28.