Roppongi has many faces including, an entertainment district with a foreign twist, new offices for daily business, and is developing as a center for the Tokyo art scene. The Lighting Detectives sped around on their bikes in April to discover what kind of light exists in this multi-functional area. The presence of the entertainment district is strongly felt at Roppongi intersection. Most people recognize this intersection as the center of Roppongi, but in recent years new development has created two new areas of focus, leaving the center of Roppongi very ambiguous. Points of reference include Mori Tower, Midtown Tower, Tokyo Tower and the metropolitan expressway, that cuts through, dividing this area of Tokyo. Large-scale luminous signage and a collage of other miscellaneous lighting dominate the view. Looking toward Roppongi from Aoyama Cemetery. The 3 towers that stand pronounced over Roppongi are a product of power and force, but appear alien in this setting. The towers look close and, yet, far off, as this scene can play tricks on your eyes.

Modern Kagurazaka still conveys the atmosphere of its once flourishing Edo Era streets. Old Japanese restaurants and bars line the narrow alleyways and with softly glowing lantern light and welcome signs to complete the scene, one forgets that this is Shinjuku Ward in the middle of Tokyo. In this historical neighborhood warm lantern light is all but a natural presence. Compared to the white lights of Ikebukuro and Shinjuku glowing brightly in the distance, Kagurazaka is submerged in darkness. Buildings in Kagurazaka are lower and lower color-temperature light also peaks out from the many alleyways. Kagurazaka Street, running down the center of this neighborhood, is the only really bright spot, except for the lights reflecting off the canal along Sotobori Street. A prized neighborhood for shopping and entertainment during the Edo period, the historical Kagurazaka Shopping Street is a 700 meter long living time slip. New and old shops are jumbled together along the street with specially designed, lantern-like street lights placed at intervals along the edge of the sidewalk. From Kaguraza`s main street several narrow alleyways lead to the interior of the neighborhood where the scale of lighting is downsized to human proportions. Outside restaurants on Hyogo Yokocyo, one of the more famous back streets, softly glowing lanterns light the entrance and also reflect of the cobbled street and traditional-style fence for a very old Japanese atmosphere.

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…

2024.9.9 Yonglin Ke + Kunzhi Jinag + Linxi Chen The brightness (luminance) of signage lighting is key to shape the overall lighting of a city. This survey conducted in Akihabara, a globally famous district, focused on the renowned Akihabara Electric Town (Chuo-dori), analyzing the evolution of the city’s lighting composition by comparing it to the survey from 19 years ago. ■Akihabara Electric TownAkihabara is the heart of electronics in Tokyo and a globally famous hub for otaku culture. While it is bustling with tourists daily, the colors of the signs, filled with anime and game culture, are much more diverse compared to upscale commercial areas like Ginza or other shopping districts. In 2020, Chiyoda Ward released guidelines for outdoor advertising and urban development, leading to changes in Akihabara’s streetscape. This survey investigates the current night view of Akihabara Electric Town, comparing it to a survey conducted 19 years ago. (Kunzhi Jiang) ■What kind of lights shape Akihabara?The main lighting elements in Akihabara’s key districts include streetlights, signage lighting, building façade lighting, and lighting from store entrances and spillover light.Compared to the picture from 19 years ago, the most noticeable green and red lights from EDION were not illuminated due to the store’s closure. The ONODEN sign is now an LED screen, and the surrounding lighting has a more subdued feel. Previously, the area behind the bridge was completely dark, but now, with the bright lighting from a drugstore’s interior and…

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…