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…

2022.10.27　Genki Watanabe+ Chuanyi Liu+ Yuki Ito This Tokyo night walk survey took place in Shimokitazawa, a neighborhood especially popular among young people. Known as one of Tokyo’s most culturally rich districts, the area is filled with vintage clothing shops, eateries, theaters, niche cinemas, and art galleries.The Lighting Detectives previously conducted a survey here in 2009. This time, we examined how the area has changed since the Odakyu Line was relocated underground. We also focused on the newly developed Shimokita Senrogai area, which opened on May 28, 2022, assessing its lighting design and comparing it with the older shopping streets to explore the contrast between new and traditional urban atmospheres. ■Map around Shimokitazawa Station With the Odakyu Line moved underground, a new neighborhood called Shimokita Senrogai was developed between Higashi-Kitazawa Station and Setagaya-Daita Station. Driven by the desire to support the community, redevelopment progressed step-by-step while listening to local residents’ voices. The entire area officially opened on May 28, 2022.Alongside the railway line, new facilities such as daycare centers, a hot spring inn, commercial spaces, student dormitories, and event venues were established. ■Development of Shimokita Senrogai The Shimokita Senrogai area we surveyed is a newly developed space created by moving the Odakyu Line underground. It was designed with the intention of reconnecting the northern and southern parts of the neighborhood that had previously been divided by the railway tracks, resulting in developments that encourage smooth pedestrian circulation throughout. The development features…

The Television Broadcasting Tower looks down on the orange sodium lamps overflowing from the grid patterned streets of Sapporo. While on assignment in December we were able to view the multi-colored White Illumination set up along Ohdori Park and Sappore Eki Mae Street. Looking towards Ohdori Promenade from the JR Tower. Sapporo is a beautiful city at twilight with orange light from the streets to set off the blue-tinted snow-topped roofs. The tree-lined street, Sapporo Ekimae Avenue is a sight to see with its unique style of looping lights over tree branches. Visitors with cameras and mobile phones converge on the decorated Ohdori Promenade. Sapporo Television Tower, similar to Tokyo Tower and Nagoya Tower, and all designed by the same architect, is also illuminated with the same type of sodium lamp.

2022.07.11　Hikaru Kimura + Yonglin Ke + Xueying Piao Shibuya, known as a youth hub, began redevelopment in 2012, transforming into a business district with a cluster of new office buildings and commercial facilities. While many new restaurants have emerged, traditional drinking alleys remain intact. This survey investigates the contrasting night scenes of the new and old Shibuya. ■Overlooking Nightscape of ShibuyaFrom the Shibuya Scramble Square, the rooftop of Miyashita Park stands out prominently to the east of the central railway tracks. The warm glow along the podium belongs to Shibuya Yokocho (alley). Nestled beside the pitch-black railway tracks and appearing as a dotted red line is Nonbei Yokocho. Viewed from above, Nonbei Yokocho exuded a soft, flickering light, resembling candles, in contrast to the lively and vibrant atmosphere of Shibuya Yokocho.The overall nightscape, divided by the Yamanote Line tracks, presents a striking contrast: the western side is dominated by tall buildings, densely packed with billboards and advertisements, exuding the lively energy of a traditional entertainment district. The eastern side, on the other hand, has fewer billboards and subdued signage, giving it a unified and calm appearance.I wonder if Shibuya will eventually become a more standardized urban landscape, much like its eastern side. Personally, I felt the bustling, nostalgic charm of the western side embodies the true spirit of Shibuya, and it’s something worth preserving. (Yonglin Ke) ■Shibuya YokochoRAYARD MIYASHITA PARK, a new landmark in Shibuya, features Shibuya Yokocho, a 100-meter-long…

Kichijoji is an area of Tokyo where a variety of elements are compressed together to create this unique neighborhood. However, even though it seems to be a mixture of “stuff” the area is well planned and organized. Public and private organizations have aggressively worked together in city planning and we surveyed the area to discover what kind of lighting environment or rules they have advised. Starting on the north side of the station, a commercial area, we then moved to the south side of the station and Inogashira Park and the alleyways that connect the park and station. North Side of the Station The lighting along the covered arcade shopping streets, Sun Road and Diamond Street, are LEDs, creating a modern atmosphere, but down some of the narrower alleyways, like Harmonic Alley, the lighting is retro for an exciting nightly stroll. Park Street The main street from the station to Inogashira Park is a narrow 3-meter wide street lined with small cafes, bars, and recycled clothing and nick-nack shops. Restaurant and shop lighting is a warm 3000k for a comfortable atmosphere, but most street lighting spills out from the entrance to these restaurants and shops. Once they are closed for the night the street is very dark. Inogashira Park Equip with solor panels, tall metal halide streetlights record 331lx inside the park. However, the average lux level inside the park is about 30lx. The streetlights are too bright, and ruin…