At Goryokaku Tower, during the season when the cherry blossoms planted in Goryokaku are in full bloom, transforming the fort into a beautiful pink star, we carry out window cleaning at a height of 90 meters to provide visitors with a clear and unobstructed view of Goryokaku and the cityscape of Hakodate.

This work is performed by a team of three workers riding in a gondola suspended from the rooftop of the observatory. Using cloths and squeegees, they carefully clean each of the 315 glass panels (total surface area: 874.52㎡) by hand. Conducted three times a year (before Golden Week, before the Obon holiday season, and before the autumn foliage), this thrilling operation can be observed up close from inside the observatory.

■ Schedule
April 14 (Tue) – April 15 (Wed), 2026
10:00–12:00 / 13:00–16:00 (approx.)

*Please note that the work may be canceled or postponed due to rain, strong winds, or other weather conditions. Breaks will be taken as needed during the operation.