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[Koto Ward, Kiba Park] A Guide to Outings with Kids from Age 0: "Kids Rium," a Free Indoor Playground

2026年6月24日 21:23

Hello! This is Kodomo Trip.

When it's raining or too hot and you think, "It's tough to play outside, but I want my child to move their body and play!", a great place to rely on is the free indoor play park "Kids Rium" located inside Kiba Park in Koto Ward.

In this article, I have summarized everything from the appeal of this facility, where children from 0 years old to preschool age can play freely, to important points such as the reservation method required for visits on weekends and holidays. Be sure to check it out until the end and use it as a reference for your weekend outing.

🛝 What kind of place is Kids Rium?

Kids Rium is an indoor kids' space located inside "Kiba Midorium" in Kiba Park, Koto Ward, which boasts vast grounds. The target age is from 0 years old to preschool age (up to 6 years old). As soon as you step inside, you are welcomed by a play space where colorful large blocks catch your eye.

The play area spreads out as if surrounding the symbol tree in the center.

3 Recommended Points💡

1. The entire floor is cushioned, so it's safe even if you fall!

The biggest appeal of Kids Rium is that the entire floor is covered with soft, fluffy cushion mats. Even babies who are crawling or children around 1 year old who are just starting to walk and often fall can play freely without you having to worry.

On the fluffy mats, even my child in the crawling stage can move to their heart's content.

2. "Large Soft Blocks" for free-style play

Inside the room, there are many large soft blocks of various shapes. Children can use their own ingenuity to move their bodies, such as stacking them like stairs to climb, making them into tunnels to crawl through, or riding on moon-shaped blocks to sway back and forth.

A slide made by combining blocks! You can use your whole body to play.

There are many blocks that stimulate children's imagination, such as tunnels and stairs.

The cute walls decorated with animals and the swaying moon-shaped blocks are also popular.

3. Air-conditioned and free!

Above all, the fact that it is free is a happy point. An environment where you can let your children play safely and freely in an air-conditioned room, regardless of the weather, is also a huge help for parents to conserve their energy.

🍼 Facilities such as hydration and diaper changing

The facilities you care about when going out are also all there, so you can rest easy.

Rest area: There are chairs and tables inside the Midorium building where you can sit and rest. Eating and drinking are not allowed inside Kids Rium, but you can hydrate in this space.
Stroller Parking: There is a spacious parking area near the facility entrance, allowing even large strollers to be parked smoothly.
Diaper Changing & Nursing Room: These are fully equipped right next to Kidsrium (inside the Midorium building). There are also restrooms with baby seats, so it is safe even when visiting with one adult.

📅 Points to Note Before Your Visit and How to Reserve

▶︎ Click here for reservations (Kiba Park Kidsrium Official Page)
https://www.tokyo-park.or.jp/park/kiba/facilities/kidsrium.html

Checking the following points before you head out will make your visit smoother.

Closed on Mondays Kidsrium (Kiba Midorium) is closed on Mondays (if Monday is a public holiday, it will be closed the following day). Please be careful about the day of your visit.
Advance web reservation required on weekends and holidays While you can drop in and play on weekdays, advance web reservations are mandatory on weekends and public holidays. Reservations can be made starting 7 days before the desired date. Since it can get crowded on weekends, we recommend booking early once your plans are set.

📍 Facility Information & Access

■Facility Name Koto Ward, Kiba Park, inside Kiba Midorium "Kidsrium"
■Address 4-6-1 Hirano, Koto-ku, Tokyo
■Target Age 0 years old to preschool children and their guardians
■Fee Free
■Closed Mondays (if a public holiday, closed the following day), year-end and New Year holidays
■Hours 10:00–12:00 / 13:00–16:00 (*Not available from 12:00–13:00 due to cleaning time)

🌳 Kiba Park Picnics and Nearby Lunch Information

A charm of Kiba Park is that you can play not only indoors but also outdoors depending on the weather. The park has an area equipped with playground equipment for kids, where they can move their bodies to their heart's content.

On mild days, we recommend a course where you play at Kidsrium or the playground area, then take out drinks or light meals from the park cafe "Park Community KIBACO" and enjoy a picnic on the vast lawn.

Click here for a look at picnics at Kiba Park👇

Also, when you want a proper lunch, "100 Spoons" inside the Museum of Contemporary Art Tokyo, which is adjacent to the park, is very popular with families! They offer free baby food, have a kids' space, and are easy to enter with a stroller, making it perfect for a follow-up visit after Kidsrium.

Click here for a look at family-friendly lunch at "100 Spoons, Museum of Contemporary Art Tokyo Branch"👇

A great option for your outings

Kidsrium is a very helpful facility when you want to let your children play a little nearby. If you are unsure about your weekend plans, please be sure to check it out.