

2025.09.04-09.08 Yonglin Ke + Masashi Kurobe The nights in Honolulu are a diverse blend of resort illumination, residential lights, torches, and night market glows. However, as the city develops, the starry sky is fading, raising concerns about the impact on the local ecosystem. Balancing urban growth with light pollution countermeasures remains a significant challenge. We conducted an on-site night walk survey to explore the balance between the city and nature and to evaluate the current lighting environment. ■Honolulu Honolulu, the capital of the U.S. state of Hawaii, is a prominent tourist destination in the heart of the Pacific Ocean. Simultaneously, it serves as the political and economic hub of the state. In this land where the sea, mountains, and urban areas sit in close proximity, the nightscape reveals a variety of expressions depending on the time and location—blending the glow of resort hotels, the soft lights of residences, traditional fire torches, and the vibrant lights of night markets. Furthermore, the combination of intense sunlight and a tropical climate creates a unique character within the city’s lighting environment. On the other hand, urban development and the growth of the tourism industry have negatively impacted the visibility of the starry sky and affected local ecosystems, such as migratory birds and sea turtles. While the state and city have begun implementing measures to reduce light pollution, finding a balance with the tourism industry remains a challenge. During this night walk survey, we investigated…
2023.07.19 Shunichi Ikeda + Masashi Kurobe + Yuta Shibata Shinjuku Kabukicho, Japan’s largest entertainment district, is a dazzling neon-lit labyrinth filled with restaurants, movie theaters, and amusement facilities. Its streets are teeming with people all night long. In recent years, however, the district has faced challenges, such as the growing presence of “Toyoko Kids” congregating in Cine City Square and engaging in criminal activities. Despite these issues, the opening of the new iconic Tokyu Kabukicho Tower has brought renewed attention to the area. As lighting detectives, we delve into the current state of Kabuki-cho, examining its lighting environment and cultural significance. ■Kabuki-cho Reborn: A Post-COVID Entertainment DistrictSeventeen years after our lighting survey in Shinjuku in 2006, Kabuki-cho has evolved from large-scale development into a global tourist hotspot. Though deserted during the 2020 state of emergency, the area is now vibrant again with the opening of Tokyu Kabuki-cho Tower. This survey revisits Kabuki-cho, comparing it with the previous survey and analyzing its changing lighting environment. ■Tokyu Kabuki-cho Tower: An All-Out Entertainment ComplexThe Tokyu Kabuki-cho Tower, a 48-story, approximately 225-meter-tall, super high-rise entertainment complex comprising a hotel, movie theater, theater, and more, opened in April 2023.Upon entering the building, I was overwhelmed by the countless glittering lights that filled the space. The small shops and narrow corridors were adorned with an excessive number of paper lanterns, creating an atmosphere reminiscent of an Asian festival. Outside, the building’s digital signage, facade indirect lighting, reflected…
Tokyo Survey: Tsukuda / Tsukishima 2019.11.18 Kyoko Takubo+Yuichi Anzai+Namiko Watanabe An overview of Tsukishima. In contrast to the bright large city buildings, the small alleys and storefronts don’t leak much light Tsukuda is an fisherman island made in Edo-period. Tsukishima was landfilled in Meiji era and now there are still many row houses and small alleys. While the port area of Tokyo is going through mass redevelopment, we investigated the lighting environment of this area filled with intermingling old town houses and large city buildings. Tsukuda Tsukuda 1Chome Mainstreet. Children playing outside the old candy store Tsukuda 1 Chome Mainstreet is mainly lit with mercury lamps Tsukuda Machikado Museum. Its lit with LED3000K with about 134lx. Our investigation started by taking an overview photo from a tall building from the other side of the river. With the hustle and bustle bright lights from the Central area’s cityscape, there was one part that was dark- that is our target of this investigation, Tsukuda・Tsukishima. The dark patch from this area is even more pronounced as it is surrounded by the bright city lights all around. As we get back on the ground, we headed towards Tsukuda 1 chome (Old Tsukuda Island) Mainstreet. On our way we saw the mercury lamp streetlights (4500K) emitting some green tinted white light. The average brightness was around 11lx. In the day you could still see a nostalgic scene with children playing outside the old candy store…
2023.01.20-01.22 Yuichi Anzai+ Chuanyi Liu ■Kozushima Village Kozushima is located about 180 kilometers south of central Tokyo with a population of about 1,800. The terrain is complex, with almost no flat land. The village is located in the center of the island at the foot of Mt. Tenjo. The impetus for the starry sky protection activities on Kozushima came from a comment made during a student internship program by the Tourism Foundation in 2016, that the night sky was as beautiful as a planetarium. The starry sky, a common sight on the island, has become a tourism resource. An island-wide effort to protect the sky began. Specific efforts include replacing streetlights and security lights with fixtures with 0% upward luminous flux and 2,700K color temperature, holding explanatory meetings for residents and regular workshops with experts to gain their understanding and cooperation in light pollution and starry sky protection activities, training islanders as guides, and holding star gazing events to protect the night sky from light pollution and communicate the appeal of the starry sky both on and off the island. The island is also working to protect the night sky from light pollution and convey the charm of the starry sky to the public. The “Light Pollution Prevention Ordinance to Protect the Beautiful Starry Sky of Kozushima Village,” which specifies the responsibilities of residents and businesses to prevent light pollution, will be enacted in 2019, and rules are being developed to…
From up above Tokyo looks like an overturn jewelry box, the night streets glitter with lights and it a fairly beautiful sight. Once back on ground, the glitter has turned harsh. It is an economically advanced nightscape, an efficient nightscape with needless light and light pollution. An aerial view of Tokyo at night. The dark area in the center of Tokyo, the Emperor`s Palace, is surrounded by clusters of lights that resemble precious stones. From this view it is unclear where Tokyo begins or ends. The Tokyo nightscape is illuminated in bright white light. Mercury lamps and florescent lights in the background of Tokyo Tower control the nightscape of this city. Old-fashioned houseboats gather in the foreground of the Odaiba District and the Rainbow Bridge.

