In front of the main gate to Senso-ji Shrine lies the neighborhood of Asakusa. One of Tokyo’s most popular entertainment districts, Asakusa flourished with kabuki, opera, and comic storytelling from the Meiji Era to the end of WWII. The Lighting Detectives discovered a variety of decorative streetlights and a lighting atmosphere fitting for this lively cultural destination. Upon entering the famous Kaminarimon, the Nakamise approach proceeds towards the shrine with bright-white, fluorescent-tube illuminated signage lining both sides. After navigating this corridor, walls of softly glowing lanterns come into view. The lanterns once lit with fire were replaced with incandescent bulbs and now fluorescent lamps. In popular neighborhoods like Shibuya or Roppongi, architectural facade lighting or neon signage fills the vertical space and “street lighting” is virtually non-existent. However, a variety of decorative streetlights festively illuminate the streets of Asakusa for a very fitting lighting environment. Pub signage and lanterns dispersed along the dark streets of Asakusa create an uncanny charm in this neighborhood. Roadway lux levels are a fairly dim 10-16 lx, but the red lanterns hanging from the eaves of establishments dig up affection for this old town.

City Night Survey- Chiang Mai Lantern Festival 2023.11.25 – 11.29 Angkana Kongchatri (Tan)+Momoko Muraoka Chiang Mai is the second largest city in Thailand which has special atmosphere tracing from Lannar kingdom period. Tan from Bangkok and Momoko from Tokyo traveled to the city for a survey. ■Back ground of the survey The lantern festival in Chiang Mai has been getting very high attention from international tourists since a couple of decades ago. Due to its visual appeal, the festival has become an explosively hot tourist spot and activity. As number of tourists raise up, the negative side of the festival also becoming a serious issue, such as the risks of fire and abandoned trashes which cause suffering to local people. In this SNS era, the speed and frequency of exchanging information has become extremely heavy than ever. When very local culture gets intensive attention from unidentified crowds, then the one to retain the culture need to face and respond the troubles to come with the anonymous attention which is also happening on the lantern festival in Chiang Mai. Festivals with lights are attractive. However, overlooking the wastes happening materially and culturally cannot be accepted anymore. Through this survey, we aim to observe not only the bright side but also the problems and struggles behind which could relate with many other traditional lighting festivals. We believe that the approach could bring another layer of depth for the lighting detective activity with…

Diriyah, KAFD and Metro stations Riyadh2025.11.16 – 11.18　Gita Listia The purpose of this Riyadh lighting survey is to explore the characteristics of old urban areas and new developments in KAFD Riyadh, with a particular focus on their metro stations. The study aims to understand how each area expresses its identity through public space lighting and how lighting strategies are applied in major infrastructure such as metro station. ■Diriyah Diriyah is a historic area on the north-west side of Riyadh and one of Saudi Arabia’s most important cultural heritage sites. Located along Wadi Hanifah, about 15 km from central Riyadh, it reflects the early history of the city. Today, Diriyah is being developed into a vibrant heritage, cultural, and lifestyle destination, where historic preservation is carefully combined with modern urban design. The lighting in Diriyah is designed to be subtle and heritage-sensitive. Very warm white tones are used to complement the Najdi mud-brick architecture, creating a calm and welcoming night-time atmosphere. Pole lights and bollards in Diriyah feature distinctive shapes, patterns, and warmer colour temperatures compared to typical street lighting in other parts of Riyadh. This traditional lighting character clearly signals that visitors are entering a cultural and heritage area. ■At-Turaif At-Turaif is the birthplace of Saudi history and represents the cultural core of Diriyah. It is recognized as a UNESCO World Heritage Site. Lighting at At-Turaif is highly restrained and conservation-focused. Soft grazing and wall-washing techniques are used to gently…

2024.11.21-11.22 Shunichi Ikeda + Yuta Shibata Yokkaichi has developed as an industrial city. The striking contrast between its dazzling factory nightscape and the increasingly organized city center stands out. We conducted a survey of the urban lighting where industry and daily life coexist. ■About Yokkaichi Yokkaichi has a long history, having developed as a port town facing Ise Bay. During the Edo period, it prospered as a post station along the Tokaido route. The city’s name originates from the markets that were held on days ending in “4.”After World War II, Yokkaichi grew as an industrial city with the construction of a petrochemical complex during Japan’s period of rapid economic growth. However, air pollutants emitted from the complex caused a serious pollution-related illness known as Yokkaichi asthma.Today, the city has regained a comfortable living environment. Residential areas, shopping streets, and everyday life now extend right alongside the industrial zones. ■3D Factory Nightscape Yokkaichi, with its history of industrial development, began drawing attention during the early 2000s factory nightscape boom. The expansive factory nightscape of the Yokkaichi petrochemical complex, which stretches about 10 kilometers north to south, is counted among Japan’s five greatest factory nightscapes. What makes it especially unique is that the nightscape can be viewed from the sky, land, and sea—earning it the nickname “3D Nightscape.” Particularly photogenic views of the factory nightscape have gained significant popularity. From the perspective of the Lighting Detectives, we conducted a survey of…

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…