Firefly Evenings 70th Anniversary


2024 commemorates 70 years of Firefly Evenings.
The beautifully glowing fireflies have welcomed many guests over the decades,
and have become an early summer tradition at Hotel Chinzanso Tokyo.
Carrying on the ideals of our predecessors that children have the opportunity to see the fireflies,
we pledge to continue being an oasis of relief for our guests.

About the garden during firefly viewing

Period: May 17th (Fri.) to June 30th (Sun.)    
Hours: 6:30 p.m. to 11:00 p.m.
*Entry with garden entry tickets available until 8:00 p.m.
Entry method: Display one of the following to the reader stationed at the garden entrance.

Staying guests: Card key (room key)
Other guests making use of the facilities: 2D Code provided by facilities
Those who have purchased a garden entry ticket: Entry ticket
Only guests making use of the facilities or those who have advanced purchased a garden entry ticket may enter the garden.
*Garden entry tickets will be sold for limited numbers and dates beginning May 1st (Wed.).

Book your tickets *Booking starts from May 1st at 12PM

The fireflies may not be visible under some weather conditions.
Guests can also enjoy the Tokyo Sea of Clouds, one of Japan’s largest mist garden spectacles.
  • Firefly Evenings Dinner Buffet

    Period: May 17th (Fri.) to June 30th (Sun.) 2024 (specific dates)
    May 17th (Fri.) to 20th (Mon.), 22nd (Wed.), 27th (Mon.), 28th (Tue.), 31st (Fri.)
    June 2nd (Sun.), 3rd (Mon.), 5th (Wed.), 7th (Fri.) to 15th (Sat.), 17th (Mon.), 20th (Thu.) to 27th (Thu.), 29th (Sat.), 30th (Sun.)
    *Please be aware that event dates may be changed.
    *If the minimum attendance numbers are met or the hall is unavailable, the event may be cancelled.

    Hours: 6:00 p.m. to 8:00 p.m., 6:30 p.m. to 8:30 p.m.

  • Special stay plans for the firefly season

    Guests may enter the garden after closing, and enjoy viewing the fireflies at their leisure, as well as dinner at Japanese Restaurant Miyuki in this stay plan limited to 3 groups per day. Enjoy a luxurious night of Japanese cuisine and firefly viewing.

    Period: May 28th (Tue.) to June 7th (Fri.)
    *Specific dates during this period

    Plan details:

    Breakfast that can be selected from among room service
    Dinner at Japanese Restaurant Miyuki with a free drink
    Garden tour (from 2:00 p.m. to 3:00 p.m. on check-in date, gather at help counter at 1:55 p.m.)

    11:00 p.m. to 11:30 p.m.: Stroll in the garden with the guidance of the hotel staff.
    Gather at the concierge desk at 11:00 p.m. *May be cancelled due to inclement weather.

    Reservations & Inquiries:
    Phone: +81 3 3943-0996
    (9 a.m. to 8 p.m.)

The history and breeding of fireflies


In the garden carried on from statesman Yamagata Aritomo with the ideal of cherishing nature, and the concept of Fujita Kanko founder Eiichi Ogawa to create an oasis in post-war Tokyo, the foundation of our hotel, Garden Restaurant Chinzanso, was born.



Two years after Chinzanso opened, firefly-viewing evenings were commenced, allowing guests to view some 10,500 fireflies among the vast garden. With this event, the hotel founder’s wishes to allow children in Tokyo the chance to see fireflies and to let young people who have moved to Tokyo be reminded of the rich nature of their hometowns was carried on.


In order to let as many people as possible view the fireflies, a firefly breeding center was established. Although the center itself no longer exists, firefly breeding is carried on to this day.


Based on advice from firefly specialists, improvements were made to the breeding center, and to the speed of the waterfall to better match the preferred environment of the fireflies. Further improvements are continued based on such advice.

Present day

The natural environment of the garden is maintained and improved to preserve a location where fireflies can live comfortably, and people can observe their beautiful flight. A biotope has been constructed for people and fireflies to coexist within.



  • Highlights to Enjoy During Firefly Season

    Highlights to Enjoy During Firefly Season

    Explore highlights like the sea of clouds, special bamboo lantern displays, and seasonal culinary delights at the restaurants for an unforgettable visit.

  • 5 Things Guests Love Most About The Tokyo Sea of Clouds

    5 Things Guests Love Most About The Tokyo Sea of Clouds

    We introduce five aspects of the Tokyo Sea of Clouds that have received high praise from international guests for their unique charm. These insights are based on guest feedback and the perspectives of potential visitors who would consider a stay at Hotel Chinzanso Tokyo after learning about our garden.

  • Rooms & Suites

    Rooms & Suites

    Superior and Deluxe rooms (45m2 to 60m2) and Prime Deluxe Twin with Tatami Space (64m2) promise a refreshing stay with L’OCCITANE Citrus Verbena series bath amenities, comfortable Sealy mattresses and quality bedding including 100% cotton pillow cases, silky 300 thread count sheets and down duvets.

    Spacious luxury suites (60m2 to 138 m2) with a separate bedroom and living room can be flexibly used for business or leisure. Enjoy convenient room service and exclusive hospitality options.