The lighthouse is constructed from 1,600 individual glass panels, which are held together by a steel frame.
It is an official 'Lover's Sanctuary' site, a designation for romantic spots in Japan.
The structure emits a red flashing light every four seconds as a navigational signal.
It was designed to symbolize the revitalization of the Takamatsu waterfront.
Takamatsu Harbor Tamamo Pier Lighthouse, locally known as Seto Shirube, is the world's largest lighthouse constructed entirely from red glass. Standing 14 meters tall, it serves as a navigational beacon at the end of the breakwater in Takamatsu Port. The structure is illuminated from within at night, creating a distinct crimson glow visible across the Seto Inland Sea. It was completed in 1998 as part of an urban renewal project for the port area. The lighthouse is situated on a pedestrian-accessible pier, offering unobstructed views of the harbor and passing ferries. It functions as an active navigational aid for vessels entering and exiting the port.
From the start of the breakwater looking toward the lighthouse with the Seto Inland Sea as a backdrop.
Walk the full length of the red breakwater to see the lighthouse up close and enjoy panoramic sea views.
Visit at dusk to witness the transition from the lighthouse's daytime glass appearance to its nighttime illuminated state.
Bring windproof clothing as the breakwater is exposed to sea breezes.
Do not attempt to climb or touch the glass panels, as the lighthouse is a delicate structure and an active navigation aid.