Marunouchi, where working people come and go,
This summer, this town will be a place where you can discover joy.
Familiar scenery is adorned with vibrant decorations.
The area is bustling with activity thanks to a variety of Events and Shops.
Enjoy it however you like with family, friends, or your significant other.
The whole town is everyone's stage.
That will become a new attraction for Marunouchi in the summer.
Now, you too.
Enjoy a special summer-only Marunouchi experience with your loved one.
Block 1 (In front of Mitsubishi Shoji Bldg., Yusen Bldg., and Marunouchi Bldg.) Development Image
Based on the concept of "people working in the Otemachi, Marunouchi, and Yurakucho Area taking center stage and inviting their loved ones, such as family and friends, Marunouchi-Nakadori Ave." 14 arch-shaped decorations using roses, lilies, and other flowers adorn the landscape of Marunouchi Nakadori, embodying a spirit of hospitality and welcoming visitors.
Please feel free to stop by for a refreshing break during work, on your way home after work, or when you're out with family, friends, or other loved ones on your days off.
Furthermore, some of the decorative lighting utilizes "botanical lights," which harness energy generated from natural life activities such as the work of plants and microorganisms in the soil.
This initiative is a new attempt to illuminate nighttime spaces with naturally derived electricity as a countermeasure against global warming, which is the root cause of extreme heat.
Member benefits information updated on July 16th Thu
"MARUNOUCHI WORKERS," Service exclusively for employees working in Mitsubishi Estate buildings in the Otemachi, Marunouchi, and Yurakucho Area offers many exclusive benefits! Click here for details.
*Images of each bonus item are for illustrative purposes only.
A corporate darts tournament will be held, bringing together companies from the Marunouchi area.
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Choose one refreshing soda or a full-bodied draft beer as a gift.
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Enjoy a complimentary drink of your choice, including the special cocktail "Cheers Blue."
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We're offering free non-alcoholic beverages and ice packs, and hosting wellness Events on weekday evenings.
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We offer a variety of hands-on Shops themed around ecology and economy.
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An exchange Events where you can experience cutting-edge knowledge from the University of Tokyo, exclusively for MARUNOUCHI WORKERS (regular price 1,000 yen → 700 yen).
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We are now accepting applications for the limited-time slots for the Shops and stamp rally at MARUNOUCHI WORKERS!
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A special tour led by the curator will be held.
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This is a hands-on learning program where teams work together to develop and present ideas through Shops.
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A singing contest will be held for employees working in the Otemachi, Marunouchi, and Yurakucho Area.
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We are recruiting members for the "Bon Odori Cheerleading Squad" to liven up the festival at the festival stage; drink tickets will be provided as a perk.
View details →Events information updated Thu
*Images for each Events are for illustrative purposes only.
This summer, under the theme of "Playful Chill Street -Cooling Day/Neon Night-", we will be creating a space where you can spend time comfortably even in the scorching heat.
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At Wadakura Fountain Park, a fantastical nighttime scene unfolds, adorned with Japanese umbrellas and illuminations.
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Enjoy Bon Odori dancing and summer festival food Gyoko-dori Ave., a quintessential summer event in Marunouchi.
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We host a variety of events, including costume Events, evening openings, and SP record concerts.
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An interactive Shops themed around ecology and economy, designed for parents and children to enjoy together.
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An exchange Events where you can experience cutting-edge knowledge through lectures and cross-talks by faculty members from the University of Tokyo.
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I experienced "plogging," an SDGs Sports that combines jogging and litter picking, in Marunouchi.
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For the 10th time, this seasonal event transforms the office district into a summer festival Venue for two days only.
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Enjoy LEGO® to the fullest with pop-up stores, 3D model displays, stamp rallies, and more.
View details →LEGO and the LEGO logo are trademarks of the LEGO Group. © 2026 The LEGO Group.
To commemorate the film's release, a special Events will be held throughout the Marunouchi Marunouchi Area, which was a filming location.
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A great science project idea: Try growing organic vegetables using compost.
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A morning wildlife survey guided by an expert, where you can take photos of insects gathering on flowers using your smartphone.
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This is a hands-on learning program where teams work together to develop and present ideas through Shops.
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Families can observe aquatic creatures together at Hotoria Square and examine them at a microscopic level using an optical microscope.
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Enjoy the nightlife of Marunouchi with a special pass that includes a night tour and restaurant hopping.
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Enjoy music and the summer breeze with a cold beer in hand on the terrace on the 7th floor of Shin-Marunouchi Bldg. Building.
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An interactive space of light and play that illuminates the night Marunouchi-Nakadori Ave.. Food stalls and food trucks will also be present.
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A popular chef's original curry is featured each month at this lunch food truck in Yurakucho Area every Tuesday and Thursday.
View details →We have started accepting applications for new Shops at STARBUCKS COFFEE Mitsubishi Bldg..
Registration for Others Shops is now closed. Thank you very much for your numerous applications.
We are holding the "MARUNOUCHI SUMMER WORKSHOP" in collaboration with more than 50 stores and companies in the Otemachi, Marunouchi, and Yurakucho Area.
🔷 MARUNOUCHI WORKERS members have a higher chance of winning!
*The images for each Shops are for illustrative purposes only.
*The content of each Shops may be subject to change.
No Shops matching your criteria were found.
*For information regarding Events such as Eco Kids Exploration Team, LEGO® Festival in Marunouchi 2026, and Marunouchi Summer College 2026, please contact the respective Events organizers.
Indoor Events and Shops will proceed as scheduled, rain or shine. Outdoor Events may be subject to change or cancellation depending on the weather on the day. For the latest information, please check this page, Official Website of each Events, or Marunouchi.com's X and Instagram.
Some Shops and hands-on programs require advance registration. Please register through the details page for each program.
We offer member benefits for "MARUNOUCHI WORKERS," a worker Service program for those working in Mitsubishi Estate buildings in the Otemachi, Marunouchi, and Yurakucho Area. Please see the EVENT section for details.
Located just a short walk from the Marunouchi Central Exit of JR Tokyo Station. Also Access from Otemachi Sta. Marunouchi Line, Chiyoda Line, and Tozai Line subway lines, and Yurakucho Station on the Yurakucho subway line.
You are welcome to take photos of your child during the Shops you are participating in. However, please follow the instructions of the Shops staff if other participants, staff, or store facilities are included in the photos.
Application confirmation emails and lottery result emails (winning/losing) will be sent from summer_workshop@omy-summer-event2026.jp. Please check your spam folder and your email settings to ensure you can receive emails from this domain (@omy-summer-event2026.jp) in addition to your inbox. This may be due to an incorrect email address or email receiving restrictions. If you still do not receive the email, please contact our inquiry desk (summer_workshop@omy-summer-event2026.jp).
Please inform the on-site staff on the day of the event if you do not wish to be photographed. Please note that any footage taken for promotional purposes will be released only after taking care to ensure that participants are not identifiable.
If you wish to change the information in your application submitted via Microsoft Forms, please contact the secretariat.
Contact us at: summer_workshop@omy-summer-event2026.jp
You can edit your registration information from your Peatix My Page. To change the number of participants, you will need to cancel your current registration and re-register. Please check the Peatix instructions for details.
Please note that if payment is not received by the payment deadline, your winning entry will be automatically canceled. If you wish to participate again, please submit a new application.
Service is not provided for this Events. Please use a nearby paid Parking Lots.
Registration for each Shops is handled through Peatix. Please cancel your registration through your Peatix My Page. Cancellation policies and deadlines may vary depending on the Shops, so please check the details on each Events page.
We do not plan to award Marunouchi Point for participation fees. Please note that if you make separate purchases at the Shops Venue 's store, the store's usual point accrual criteria will apply.
Please note that, as a general rule, we cannot refund participation fees if you cancel after payment has been completed due to your own circumstances.
Receipts can be issued from your Peatix My Page. For detailed instructions, please refer to the "How to Issue a Receipt" section on the Peatix Help page.
MARUNOUCHI SUMMER FEST Participant Office
inquiry
"MARUNOUCHI SUMMER FEST" Public Relations Office
(Within KMCgroup Co., Ltd.)
TEL: 03-6261-7413
FAX: 03-6701-7543
inquiry
Marunouchi Call Center
TEL: 03-5218-5100
(11:00 AM - 9:00 PM)
*However, on Sundays and public holidays, the closing time is 8:00 PM (only on the last day of consecutive holidays).
