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Architects: Jo Nagasaka, Schemata Architects
- Area: 167 m²
- Year: 2024
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Manufacturers: Glory
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Professionals: Bauhaus Maruei Co., Ltd., GLORY







MAD Architects have completed their restoration work on the Kiyotsu Gorge Tunnel in Japan’s Niigata prefecture, transforming the historic lookout tunnel into a trail of artistic spaces. The “Tunnel of Light” was opened as part of the 2018 Echigo-Tsumari Triennale, cutting through 750 meters of rock formations to offer a panoramic view across one of Japan’s great landscapes.
MAD’s scheme seeks to “transform points along the historic tunnel through the realization of several architectural spaces and artistic atmospheres." Inspired by the five elements of wood, earth, metal, fire, and water, the scheme explores the relationship between humans and nature, and "re-connects locals and visitors alike with the majestic beauty of the land."