Seiko House Clock Tower illuminated in edo purple as WCH Tokyo 25 flag rises

The World Athletics Championships Tokyo 25 is just four days away, set to ignite the Japan National Stadium on 13 September.

In celebration of this milestone and to share the thrill of the championships with the public, World Athletics Partner SEIKO will illuminate the iconic Seiko House Clock Tower in Ginza in Edo purple — the official colour of the 20th edition of the championships, throughout the championships period. Adding to the spectacle, a special flag bearing the WCH Tokyo 25 logo will fly proudly from the tower’s flagpole.

This is a unique opportunity for visitors to experience a landmark in the heart of Tokyo transformed in the spirit of athletics. Stop by Ginza and be part of the excitement as the world’s greatest athletes prepare to take centre stage!

Illumination and flag schedule

Event Details

• Dates: Monday 8 September – Sunday 21 September 2025
• Time: 18:00 – 22:00 (Illumination Hours) The flag will be displayed all day.
• Location: Seiko House, Ginza 4-5-11, Chuo-ku, Tokyo

Additional Information

During this period, Seiko House will also host a special exhibition organised by SEIKO entitled “HARMONY OF THE MOMENTS”, along with a display of original works from the World Athletics Championships Tokyo 25 Art Project.