Tokyo for primary-school kids: the sweet spot

If there's a perfect age to bring a child to Tokyo, it's primary school. Five-to-eleven-year-olds are old enough to walk a full day, follow a story and remember it forever, but still young enough to be genuinely delighted by trains, robots and giant miniature cities. Almost the entire database opens up at this age, so the challenge becomes choosing, not finding.

The trick is to let them lead a little. A child who helps pick the day's anchor from a shortlist arrives invested rather than dragged along.

The can't-miss trio

Three venues punch above everything else for this age:

• Small Worlds Tokyo — an enormous, jaw-dropping miniature museum in Odaiba where kids can spend hours spotting tiny detail; some models are interactive, and you can even have a mini figure made.
• KidZania Tokyo — a whole role-play city where children 'work' real jobs, earn currency and spend it. Book a session ahead; it's wildly popular and pitched squarely at this age.
• teamLab Borderless — digital art you walk through, touch and change. It thrills primary kids and doesn't require them to read a single label.

Trains, ninja and science

The Railway Museum at Omiya is a day out in itself — real carriages, a driving simulator and a huge model diorama. It's a short hop from central Tokyo and worth the trip for any train fan. In the city, the smaller Tokyo Metro Museum lets kids drive a subway simulator for far less fuss.

Ninja experiences hit the imagination hard now. The Ninja Trick House in Kabukicho is hands-on with hidden doors and throwing stars, while the Samurai Ninja Museum in Asakusa adds costumes and a guided experience. Both are indoor, so they double as rainy-day saves.

For the curious and question-asking, Miraikan — the National Museum of Emerging Science and Innovation — is superb: robots, space, hands-on physics and big ideas made touchable. It rewards a slow, unhurried visit far more than a rushed tick-box one.

When you need to burn energy or fill a wet afternoon

Indoor entertainment complexes like Tokyo Joypolis (arcade rides and VR, better for the upper end of this age) and Namjatown (quirky themed games and a famous gyoza alley) are useful pressure valves. A short, well-managed visit to a cat café such as Cat Cafe MoCHA can be a lovely calm-down — brief the kids on gentle hands first.

And don't overlook a Grand Sumo tournament if your dates line up. Older primary kids find the ritual, the salt-throwing and the sheer size of the wrestlers genuinely gripping. Check the venue page for tournament dates and ticketing, which sell out early.