[GW First Announcement] Happiness Kids Festival supported by CosmoNet & Peace Stuff Flea Market will be held! The giant inflatable activity "Big Amusement Park Playland" will make its debut in Japan! ~Come to Nagasaki Stadium City this Golden Week~

Nagasaki Stadium City is pleased to announce that it will be hosting the "Happiness Kids Festival supported by CosmoNet Co., Ltd." (hereinafter referred to as the "Happiness Kids Festival") and the "Peace Stuff Flea Market" at Nagasaki Stadium City on May 4th (Monday, public holiday) and May 5th (Tuesday, public holiday), 2026. We will provide a fulfilling time for families and friends to enjoy through experiences unique to Stadium City. This information is the first in a series of Golden Week events, and further information will be announced sequentially in the future.

■ The "Happiness Kids Festival" will be held throughout Stadium City.
Following the success of last year's "Happiness Kids Festival," this year's event expands to encompass the entire Nagasaki Stadium City, and is even more powerful than before. The main venue, Happiness Arena, will feature the first-ever "Big Amusement Park Playland," a giant inflatable activity area in Japan (*). Furthermore, this year the festival will extend beyond the arena, offering a variety of content for families to enjoy all day long at various locations throughout Nagasaki Stadium City, including the "Colorful Kids Train" that traverses the city, the "Children's Art Museum," and playground equipment in the South Plaza.
(*According to manufacturer research. As of April 2026, this is the number of installations of this playground equipment in Japan.)

<Happiness Kids Festival Overall Map>

<Highlights of the Happiness Kids Festival>

●A huge collection of inflatable play equipment, including the "Big Amusement Park Playland," making its debut in Japan!

Happiness Arena will feature a variety of inflatable play equipment for all ages, from toddlers to adults, including Japan's first "Big Amusement Park Playland," slides, and a pirate ship ball pit.
You can experience dynamic play that makes full use of the arena's spacious environment.

<Overview>
Dates: May 4th (Mon, public holiday) - May 5th (Tue, public holiday)
Time: 10:00-17:00
Location: Happiness Arena

●A first for Nagasaki Stadium City! A colorful kids' train crosses Stadium City.

This is a special ride experience that takes you through the concourse connecting Happiness Arena and Stadium City South.

<Overview>
Dates: May 4th (Mon, public holiday) - May 5th (Tue, public holiday)
Time: 10:00-17:00
Location: Peace Stadium, 2nd floor concourse (Urakami River side)

●A huge collection of everyone's favorite "working vehicles"! Experience your dream vehicles up close.

In addition to police motorcycles and Self-Defense Force vehicles, the "Safety Catch" traffic safety education vehicle will also be on display! Children can try their hand at a realistic driving experience, including simulated driving in bad weather and at night. Enjoy seeing these amazing working vehicles up close.

<Overview>
Dates: May 4th (Mon, public holiday) - May 5th (Tue, public holiday)
Time: 10:00-17:00
Location: Special booth outside Happiness Arena
Price: Free

● The "Children's Art Museum" adorns the concourse with unique carp streamers created by children.

Last year, approximately 1,000 children from Nagasaki City participated in the concourse carp streamer project. This year, the project will be expanded to include all of Nagasaki Prefecture and will be upgraded to a "Children's Art Museum." Artwork by approximately 2,500 children will adorn the stadium.

<Overview>
Exhibition period: April 29th (Wed, public holiday) - May 6th (Wed, public holiday)
Location: Peace Stadium, 3rd Floor Concourse
Price: Free

<Special all-you-can-play pass available>
We have prepared a great value "All-You-Can-Play Pass" that allows you to play on all the play equipment inside and outside Happiness Arena. Please take advantage of the pass and enjoy the event to the fullest.
The playground equipment located in the concourse and South Plaza can be used on a pay-per-use basis, so even those who just drop by on the day can easily enjoy it.

Sales hours: 9:00 AM - 4:00 PM
Sales locations: Peace Stadium 2nd floor ticket center / various amusement rides outside the arena

Please check here for details
https://www.nagasakistadiumcity.com/hapiness-kids_2026/

■ [Vendors Wanted] Nagasaki Stadium City's first ever "Peaceta Flea Market" will be held simultaneously.
A flea market will be held in the open concourse of the stadium. Various types of vendors are expected to participate, including handmade goods and children's items.
We are also accepting applications from the general public for vendors, so if you would like to set up a booth, please apply using the application form below.

<Event Overview>
Dates: May 4th (Mon, public holiday) - May 5th (Tue, public holiday), 2026
Time: 11:00-17:00
Admission fee: Free
Location: Peace Stadium, 3rd Floor Concourse
Application to set up a stall: https://forms.gle/TmVSLzzn1pGLrE379

■Nagasaki Stadium City offers plenty of content for everyone to enjoy during Golden Week, from children to adults.
Further updates regarding Nagasaki Stadium City's Golden Week events will be released sequentially on our official website and official social media accounts, so please look forward to them.

＜For the latest information on Nagasaki Stadium City, click here＞
・Official app: https://app.nagasakistadiumcity.com/apptop/move_studiumCityApp.html (*This is the app download page, so it cannot be used on a PC.)
・Official website: https://www.nagasakistadiumcity.com/
・Official X https://x.com/nscproject
・Official Instagram https://www.instagram.com/nagasaki_stadiumcity/