The fact sounds like a brochure, but it has very concrete consequences. If entry is free you can go in for twenty minutes, leave, and come back another day; you can see three rooms and go when the child has had enough. That turns museums into a daily resource rather than an outing.
01 How the complex works
It is not one big museum but an institution with twenty-one museums, most of them strung along the central lawn, plus the zoo in another neighbourhood. Entry is free at all of them.
The busiest are natural history, air and space, national history and art, all a few minutes' walk from one another. You can see a whale skeleton, a historic aircraft and a painting gallery in the same morning without taking any transport.
The only complication is organisational: some museums require a free timed pass, especially in high season. You book it online in advance, and it is worth checking before you plan your day.
02 The strategy that actually works
The usual mistake is trying to finish a museum. These collections are unfinishable, and forcing them produces an exhausting day and a blurred memory. With free entry there is no need: the unit of a visit is not the museum, it is the room.
A plan that works: pick two or three specific rooms a day, see them unhurried, go out to eat and come back in the afternoon to a different building. If the day goes wrong, you have lost no money.
With children the difference is bigger still. You can go in to see one thing, the elephant in the hall or the aircraft hanging from the ceiling, and leave after fifteen minutes with no sense of waste.
03 Where the money goes
It is worth being clear: the city is not cheap. Accommodation is among the most expensive in the country, and eating near the central lawn is not good value either. What is free is the content, not the stay.
The compensation is that spending becomes predictable. You know what sleeping and eating cost, and the rest of the day has no variable cost, which is exactly the opposite of European capitals with per-person, per-day museum tickets.
Two adjustments that work: stay outside the centre with a good metro connection, and bring food for midday. The lawn is made for sitting and there is plenty of grass.
04 When to go with this plan
May and October are the best months: highs in the low twenties and low humidity, which is what you want when the day alternates street and gallery. July and August complicate things because of the mugginess, although the museums are the best possible refuge.
Winter has an advantage almost nobody uses: in January and February the museums are empty and you see them properly. It is cold outside, but the plan is indoors.
And avoid the cherry blossom window if museums are your priority. Between late March and mid-April the city takes its biggest visitor peak of the year and the galleries fill up.
When entry costs nothing, you stop trying to finish the museum and start actually visiting it.
05 If this is not for you
If you want a capital for wandering, with an old quarter and neighbourhoods made for long lunches, this is not the choice. The city is organised around a monumental lawn of enormous scale and no shade, and walking it is tiring.
But if you are travelling with children, on a tight activities budget, or simply want to see a lot without paying for entry, there are few places in the world with this density of open, free collections ten minutes' walk from one another.
