This summer, IMAGINUS (イマジナス) — the science experience facility in Koenji, Tokyo, operated by Congre, Inc. — is holding a special summer exhibition for families with children. The event, "Fuwa Fuwa Gym Summer," runs from Saturday, July 18 to Monday, August 31, 2026. At the same time, starting July 18, the popular "Science Experience Lab" feature welcomes new science show performances starring an entertaining scientist and assistant duo.
Everyone's Favorite Inflatable Toys, Big and Small, Are Back This Summer!
After exploring science through workshops and science shows, it's time to get the whole body moving indoors.
The exhibition also features dinosaur puzzles and retro-style games for even more fun.
Head to IMAGINUS this summer vacation for a full day of brain and body activities!
Corner 1: Giant Inflatable
A supersized inflatable slider reaching almost to the ceiling of the gymnasium makes its appearance.
Experience the thrill of sliding down 8 meters in one shot!
Corner 2: Ball Pool
Dive into a pool packed with colorful balls for a full-body swimming experience!
Corner 3: Game Experience TANO
Swing your arms to race down a snowy slope in a skiing game, or hit balls falling from the screen with your hands and feet to launch fireworks — it's all about using your own body as the controller!
Corner 4: Rest Corner & Dinosaur Puzzle
All the pieces look identical, yet these cute dinosaur shapes connect at the back, legs, or belly to link endlessly — a surprisingly tricky geometric puzzle!
Running Simultaneously: Summer Special Exhibition "Ghost Hide-and-Seek — Let's Find Them All Together!"
Ghosts have snuck into IMAGINUS for hide-and-seek this summer! Wander through the facility, collect clues, and solve the riddles written on the card. Once all the mysteries are cracked, step into the ghost's hide-and-seek room for a photo opportunity and one final challenge. Come meet the "kawaii yet creepy" ghosts at IMAGINUS.
Summer Special Campaign: Morning Entry & SNS Post Prizes!
A campaign is available for guests who enter by 10:00 AM or post on social media during "Fuwa Fuwa Gym Summer" or "Ghost Hide-and-Seek."
Post your experience or photos on X or Instagram (Stories are welcome too) with the hashtag #IMAGINUS or #イマジナス, then show the post at the 1F information counter to receive one discount voucher (valid for use within the facility) per admission ticket.
*Please check which areas the voucher can be used in.
Highlights of the Special Exhibition
- From toddlers to elementary school students, "Fuwa Fuwa Gym Summer" lets kids of all ages get active to their heart's content.
- Fully indoors — the perfect escape from the intense summer heat, with fun lasting all day long.
- Enter by 10:00 AM or post on SNS to receive a coupon redeemable for craft activities at IMAGINUS.
Exhibition Overview
| Item | Details |
|---|---|
| Official Name | Summer Special Exhibition "Fuwa Fuwa Gym Summer" / "Ghost Hide-and-Seek 'Hie~!' — Let's Find Them All Together!" |
| Period | Saturday, July 18 – Monday, August 31, 2026 (No closures during the period) |
| Venue | Fuwa Fuwa Gym: 1F Gymnasium / Ghost Hide-and-Seek: Entire facility, 3F Special Exhibition Room |
| Hours | Fuwa Fuwa Gym: Weekdays 9:30 AM–5:00 PM (last entry 4:00 PM); Weekends/Holidays and August 10–14 9:30 AM–6:00 PM (last entry 5:00 PM). Ghost Hide-and-Seek: Weekdays 10:00 AM–5:00 PM (ticket purchase by 4:30 PM); Weekends/Holidays and August 10–14 10:00 AM–6:00 PM (ticket purchase by 5:30 PM) |
| Admission | Fuwa Fuwa Gym: Elementary school and below ¥1,800, junior high school and above ¥1,000. Early-bird tickets (on sale until July 17 at 11:59 PM): Elementary school and below ¥1,600, junior high school and above ¥900. Children 3 and under free. Children in 2nd grade or below must be accompanied by a guardian. Ghost Hide-and-Seek: ¥660. Guardians only need to purchase a ticket for the child. |
| Organizer / Operator | IMAGINUS (Congre, Inc.) |
| Event Pages | Fuwa Fuwa Gym Summer: https://www.imaginus-suginami.jp/events/2026/06/15/10531/ / Ghost Hide-and-Seek: https://www.imaginus-suginami.jp/events/2026/06/15/10536/ |
