UONUMA & Iwagumi Masterclass 2026
— 7-Day Fully Inclusive Guided Tour with Yusuke Homma —
Tour Dates: October 12 (Mon) – October 18 (Sun), 2026

CELESTA is an experiential travel program that invites participants to discover the essence of the Nature Aquarium through immersion in the natural landscapes and cultural heritage of Japan, where its philosophy was born.

This special 7-day masterclass has been designed to explore the philosophy, structure, and observational depth of Iwagumi, the stone-based layout that lies at the very core of the Nature Aquarium.

The setting for this journey, Uonuma, is a land shaped by heavy snowfall, pristine beech forests, clear streams carved by snowmelt, and terraced rice fields formed through centuries of human coexistence with nature. It is also the birthplace of Hakkai Stone, the iconic stone material widely known in Iwagumi layouts.

During the tour, participants will walk through natural forests, observe Hakkai Stones in mountain rivers, and touch the stones themselves—learning firsthand how stones exist in nature, how they relate to one another, and how these relationships form the foundation of Iwagumi composition.

In addition, special seminars will be held at the ADA Nature Aquarium Gallery, focusing on both layout creation and maintenance. Through hands-on practice, participants will gain a deeper understanding of the entire process—from observing nature to translating its principles into aquarium expression.

We sincerely hope that this journey will become an unforgettable experience of learning, discovery, and inspiration for all participants.

Highlights of UONUMA & Iwagumi Masterclass 2026:
① Small-group guided tour led by ADA SUIKEI Creator Yusuke Homma
② Guided explanation by the Sumida Aquarium maintenance staff
③ Fieldwork in Uonuma’s natural forests and rivers
(Hakkai Stone observation and stone searching)
④ Special seminar at the ADA Nature Aquarium Gallery
(Certificate of Completion Awarded)
⑤ Exclusive visit to the residence of Takashi Amano, including a private viewing of the 4-meter aquarium
⑥ Participant-exclusive commemorative benefits
・ADA × CELESTA 2WAY BACKPACK
・Exclusive commemorative keyring
・Special program at the residence of Takashi Amano


* ADA is planning to host the opening of the Nature Aquarium Gallery and the IAPLC results announcement event, “ADA Festival 2026,” at ADA Headquarters over two days, Saturday, October 10 and Sunday, October 11, 2026, prior to the start of the tour. This will be ADA’s first comprehensive event, featuring exhibitions, product sales, hands-on experiences, and food and beverage offerings. Over these two days, visitors will have the opportunity to directly experience ADA’s worldview and discover new inspirations through a wide variety of content at the venue. We encourage you to consider participating in this event as well.
https://www.adana.co.jp/en/release/detail?id=1529


Number of Participants & Application Deadline:
To ensure the highest quality experience, participation is limited to a maximum of 12 guests.
Application Deadline: May 31, 2026

▶ For detailed information and applications, please visit the official CELESTA website.
https://www.adana.co.jp/celesta/tour/post_121/

We welcome inquiries and questions, even if you’re just thinking about joining the tour.
Contact us here:
https://www.adana.co.jp/celesta/contact/

If you get in touch with us, we’ll send you a brochure with detailed information about the tour, along with an application form. Feel free to contact us at any time.

For a detailed article introducing the highlights of the Uonuma tour, please click here.
https://www.adana.co.jp/celesta/travel-article/post_140/