2022.11.4-5 Sachiko Segawa Surprisingly, this survey of the Sawara district marks the first time the Lighting Detectives have conducted an investigation within Chiba Prefecture. The team focused on an area designated both as an Important Preservation District for Groups of Traditional Buildings and as a Landscape Formation District. Here, the townscape of merchant houses, which flourished from the Edo period thanks to river transport on the Tone River, still remains. Located about 70 km from Tokyo Station and slightly inland from the Tone River, the Sawara district of Katori City once thrived as a merchant town, to the point it was said to rival Edo itself. However, the town declined during Japan’s period of rapid economic growth. Following a townscape survey in 1974, the value of its historic scenery was reappraised. Today, leveraging its convenient location—just two hours from Tokyo and one hour by train from Narita Airport—the area is being redeveloped as a tourist destination. For this survey, the team limited their scope to the townscape along the Ono River and conducted a nightscape survey. ■Uniquely Designed Lighting Fixtures From JR Narita Line Sawara Station, as we walked toward the Ono River, we were greeted by a bollard topped with a monkey. “Why a monkey…?” we wondered, but as we continued upstream along the river, we encountered bollards adorned with all sorts of figures: rabbits, carp, children, frogs, Ebisu, and more—each one different, with no two alike. These uniquely…

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…

Zurich ⇒ Bern ⇒ Basel2018/04/12-04/17　　Yumi Honda + Kyoko Takubo We visited Switzerland in search of places with light where people gather. Celebrating the longawaited arrival of spring, we found that more people than we expected were relaxing outdoors from morning until night. During the day, they enjoyed the abundant nature and beautiful cityscapes, soaking up the natural light. At night, people were chatting and laughing in a soft, gentle light. We climbed a dark hill for an elevated nightscape shot, but even there, it wasn’t tourists but locals who were gazing at the nightscape. We were able to find a city light in Switzerland that makes you want to spend a long, leisurely time there. People enjoying the sunset on the shores of Lake Zurich People Gathering on the Riverside in Basel, with Beers in Hand ■Waterside at DuskOn a warm spring evening, people gather on the shores of Lake Zurich. In open areas with a view, everyone enjoys the passing of time in their own way—a unique luxury. After the sun sets and the sky turns indigo, historical buildings from the Middle Ages are softly lit and reflected on the water’s surface. The reason this atmosphere can be enjoyed comes from a combination of historical background and urban planning.First, the number of cars is overwhelmingly small compared to other cities. The city is not obstructed by wide roads or traffic jams, so you can feel close to the river,…

2021.10.27　Shunichi Ikeda + Erina Hosono + Namiko Watanabe About three weeks after the state of emergency in Tokyo was lifted, we conducted our first urban night walk survey since the COVID-19 outbreak, heading to Akasaka. The area between Akasaka and Akasaka-mitsuke features both traditional establishments such as atmospheric ryotei (Japanesestyle restaurants) and neon-lit entertainment districts reminiscent of Kabukicho. At the same time, Akasaka has gained recognition as a tourist destination due to redevelopment centered around Akasaka Sacas. We surveyed the nighttime environment of this area where tradition, business, and nightlife coexist. ■Aerial Nightscape of AkasakaThe central area of Akasaka lies roughly in the middle of the cluster of high-rise buildings. At first glance, the nightscape viewed from above gives a rather subdued impression, due to the lack of prominent building illuminations or large advertising towers. However, upon closer inspection, one can see clusters of commercial lights peeking through the gaps between buildings. While the limited presence of dramatic lighting or decorative illuminations may make it less visually striking, the overall effect is a calm and environmentally friendly nightscape. ■Akasaka Sacas AreaAkasaka Sacas, a multi-use complex directly connected to Akasaka Station, is usually frequented by businesspeople and shoppers. However, likely due to the lingering effects of the COVID-19 pandemic, the number of passersby during our survey was surprisingly low, which was unfortunate. The nighttime lighting around the base of the 179-meter-tall Akasaka Biz Tower is uniformly set to a relatively low…

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…