Kurasaki Lighthouse

Kurasaki Lighthouse: Japan's Oldest Concrete Lighthouse on a Remote Island

Standing proudly on the southern tip of Oshima Island in the Hyuga-nada Sea, Kurasaki Lighthouse is a remarkable testament to Japan's pioneering spirit in modern engineering. Completed in 1884, this is the oldest surviving unreinforced concrete lighthouse in Japan and one of the first lighthouses designed entirely by a Japanese engineer. Designated as a National Important Cultural Property in 2024, it continues to guide ships through the waters off southern Miyazaki Prefecture to this day.

Historical Background

Kurasaki Lighthouse was the 49th Western-style lighthouse built in Japan, completed on August 15, 1884 (Meiji 17). It was designed by Fujikura Kentatsu (1851–1934), a pioneering Japanese engineer who had studied architecture at the University of Edinburgh in Scotland. Fujikura originally served as an interpreter for Richard Henry Brunton, the Scottish engineer known as the "Father of Japanese Lighthouses," before going on to lead Japan's lighthouse construction program independently.

At a time when stone and brick were the standard materials for lighthouse construction, Fujikura chose unreinforced concrete — making Kurasaki Lighthouse one of the earliest concrete structures ever built in Japan. Construction materials had to be carried by hand from the island's port to the clifftop site, an extraordinary feat given the rugged terrain.

During World War II, the lighthouse suffered severe damage from six separate air raids between March and July 1945. It was restored in 1951 and underwent structural reinforcement in 2000, though its original Meiji-era form has been carefully preserved throughout these repairs.

Why It Was Designated a National Important Cultural Property

In October 2024, Japan's Council for Cultural Affairs recommended that Kurasaki Lighthouse be designated as a National Important Cultural Property (Jūyō Bunkazai). The lighthouse had previously been registered as a Tangible Cultural Property in March 2019. Its elevation to Important Cultural Property status reflects several factors of exceptional significance.

First, it is Japan's oldest surviving unreinforced concrete lighthouse and one of the earliest concrete structures in the country, making it invaluable for understanding the history of construction technology in Japan. Second, the design — with its distinctive dodecagonal (twelve-sided) light tower rising from the center of a gable-roofed annex building — exemplifies the architectural style of Meiji-period lighthouses. Third, as one of the first lighthouses designed and built under the direction of Japanese engineers rather than foreign advisors, it marks a pivotal moment in Japan's modernization.

Architectural Highlights

The lighthouse stands 14 meters tall atop a sea cliff approximately 84 meters above sea level, giving its light an effective height of 93 meters above the ocean surface. The beam can be seen from up to 24.5 nautical miles (approximately 45 kilometers) away.

The light tower features a rare dodecagonal (twelve-sided) plan and is topped with a metal dome housing the lantern room. Stone detailing frames the doorways and windows, providing both structural reinforcement and elegant contrast against the concrete walls. The tower rises from the center of a single-story annex building with a traditional Japanese gable (kirizuma-zukuri) roof — a layout characteristic of Meiji-era lighthouse design.

Adjacent to the main lighthouse, the Kurasaki Mizushima Illumination Light directs a beam toward a dangerous reef called Mizushima, located 1,680 meters offshore, warning passing ships of the hazard.

Visiting Kurasaki Lighthouse

Kurasaki Lighthouse is located on Oshima Island, an uninhabited island approximately 3 kilometers off the coast of Nango-cho in Nichinan City, Miyazaki Prefecture. The island is accessible by the municipal passenger ship "Akebono 3," which departs from Meitsu Port and runs four times daily. The crossing takes approximately 13–15 minutes.

Visitors should disembark at Takenoshiri Port, the closer of the island's two ports to the lighthouse. From there, it is approximately a one-hour walk (about 2.6 kilometers) along a maintained trail through subtropical vegetation to reach the lighthouse on the island's southern cape. The trail passes through lush greenery with views of the surrounding sea.

Since Oshima is an uninhabited island with no shops or facilities beyond the Adventure Cabin lodging, visitors should bring sufficient water and food. It is essential to plan your visit around the ferry schedule to ensure you can return to the mainland. The ferry does not operate on Tuesdays and during the year-end/New Year period (December 29 – January 3).

Surrounding Attractions

Meitsu Port itself is worth exploring before or after your island trip. The port is one of Miyazaki Prefecture's leading fishing harbors, renowned for bonito pole-and-line fishing and tuna longline fishing. The "Minato no Eki Meitsu" (Port Station Meitsu) facility, operated by the local fisheries cooperative, offers fresh sashimi, sushi, and the local specialty "katsuo-meshi" (bonito rice) at reasonable prices.

The broader Nichinan Coast area offers numerous attractions including Udo Jingu Shrine, a colorful Shinto shrine set in a cave overlooking the ocean, and the Sun Messe Nichinan park with its replicas of Easter Island moai statues. Cape Toi, the southernmost point of the Nichinan Coast, is home to a herd of wild horses known as Misaki-uma. Obi, often called the "Little Kyoto of Kyushu," features well-preserved samurai residences and castle ruins.