If it’s raining and you’re travelling with children, this is the answer.
The National Museum of Emerging Science and Innovation — Miraikan — sits in Odaiba and charges ¥630 for an adult and ¥210 for anyone under 18. On Saturdays, under-18s get in free. It is the cheapest way to put a family somewhere warm and interesting for half a wet day in Tokyo, and it isn’t close.
Two things will trip you up if you don’t plan for them: the ticket cut-off and the closing day. Both are below.
What it costs
| Ticket | Adult | Under 18 | Preschool |
|---|---|---|---|
| Permanent exhibitions | ¥630 | ¥210 — free every Saturday | Free |
| Permanent + Dome Theater | ¥940 | ¥310 — ¥100 on Saturdays | ¥100 |
Groups of eight or more get a discount, though the specific group rate isn’t published on the admission page — contact them if that applies to you.
Tickets can be bought from one week before your visit date.
The Saturday rule is the one to plan around. A family of two adults and two children under 18 pays ¥1,260 on a Saturday for the permanent exhibitions — the children are free — against ¥1,680 on any other day. Add the Dome Theater and it’s ¥2,080 on Saturday versus ¥2,500. It’s not a fortune either way, but the Saturday version is a genuinely cheap afternoon.
The 16:30 cut-off
Opening hours are 10:00–17:00, and ticket sales stop at 16:30.
That’s a hard stop, and it is earlier than most people assume. Museums that close at 17:00 often sell until 16:30 or 16:45; Miraikan’s cut-off is firmly at 16:30, and on a rainy day — when trains are slower and everyone is moving at umbrella pace — the last hour disappears faster than you plan for.
If you’re coming after lunch, aim to be through the door by 15:30 at the latest. Half an hour before the cut-off is not enough time to see the building.
Closed on Tuesdays
Miraikan closes every Tuesday, opening instead if the Tuesday is a public holiday. It’s also closed 28 December to 1 January.
This matters because the Ghibli Museum also closes on Tuesdays, and the Mori Art Museum shortens its hours that day. A rainy Tuesday in Tokyo removes several of the obvious options at once — see our two-minute decision guide for what’s still open.
Getting there
The address is 2-3-6 Aomi, Koto-ku, on the waterfront in Odaiba.
- Tokyo International Cruise Terminal Station — 5 minutes on foot.
- Tokyo Teleport Station — 15 minutes on foot.
Take the first one in bad weather. Fifteen minutes across open reclaimed-land streets in Odaiba, with wind off the bay, is a genuinely unpleasant walk in rain — this is one of the more exposed parts of Tokyo, and there’s little shelter along the way.
The museum lists a phone number and provides English support: +81-3- 3570-9151.
What’s actually inside
Three permanent exhibition zones, plus a theatre.
Explore the Frontiers (5F). The museum frames it as a question — “Why are we here now?” — and the zone works across scales, from space and the solar system down to the Earth and the life on it. This is the floor with the most immediate visual pull for children.
Create your future (3F). Built around “How should humans apply and evolve sustainable prosperity?”, it asks you to imagine the future society and lifestyle you’d want. More conceptual, and the floor where older children and adults tend to slow down.
Discover your Earth. Looks at how we’re connected to life and the environment using current scientific data and tools.
The Dome Theater (6F) shows full-dome, stereoscopic films, projected by two high-intensity 4K RGB laser projectors onto a dome screen. It’s a separate ticket tier — the ¥940 adult / ¥310 under-18 rate above — and it’s the part of a Miraikan visit that people remember.
If you’re buying the combined ticket, check the theatre’s schedule when you arrive rather than assuming you can walk in: dome screenings run to fixed times, and on a wet weekend the good slots go.
How to plan the visit
With younger children: start on 5F and work down. The space and Earth material lands hardest and earliest, and the descent means you finish near the exit rather than dragging everyone back up.
With teenagers or on your own: 3F first. The future-society material rewards attention, and it’s quieter early.
With the Dome Theater: book or check the screening time first, then build the floors around it. Working the other way round means watching the clock through the exhibitions.
On a Saturday: it’s free for under-18s, so it’s busier. Arriving at opening rather than after lunch is worth more on Saturdays than on any other day.
What we can’t tell you
Two honest gaps.
We can’t confirm a typical visit length. The museum doesn’t publish one. Based on the floor count and the theatre, half a day is a reasonable plan, but that’s our inference rather than an official figure.
We can’t confirm that the building is fully enclosed. It’s a science museum, so this is very likely, but the official pages don’t state it — and we don’t print things the source doesn’t support. Assume you’re indoors once you’re in; assume you’ll need the umbrella for the walk from the station.
Before you go
- Not a Tuesday. Unless it’s a public holiday.
- Through the door by 15:30, because tickets stop at 16:30.
- Tokyo International Cruise Terminal Station, not Tokyo Teleport.
- Saturday if you have under-18s — they’re free.
- Decide on the Dome Theater before you buy, since it’s a different ticket.
For a full wet-weather day, including a version rebuilt around this museum for families, see our rainy-day Tokyo itinerary.