Refurbishment of a former ryokan. Shiroiya Hotel by Sou Fujimoto Architects

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Project team
Sou Fujimoto, Naganobu Matsumura, Shintaro Honma, Masaki Iwata, Toshiyuki Nakagawa, Haruka Tomoeda, Hitoshi Fujiita, Minako Suzuki, Harunori Fujii, Li Qun, Tai Furuzawa, Shiro Takahashi, Giorgio Castellano, Nadir Ouhibi, Natasya Handajuwana, Tomonori Kitamura,Giulia Curti, Francesco Zonca, Takahiro Nishikawa, Seungtaek Kim, Saori Mikada,Megumi Sato.
Structural engineer: ISHI SEKKEI.
Mechanical engineer: ISHI SEKKEI.
Landscape architect: SOLSO.
Lighting designer: LIGHT DESIGN.
Mars Inc.
Site area: 812.98 sqm .
Building area: 713.53 sqm.
otal floor area: 1,744.52 sqm.
New building
Site area: 778.08 sqm .
Building area: 610.86 sqm .
Total floor area: 820.94 sqm.
Design year: from 2014-2020.
Construction year: 2017-2020.
Location Localización
2 Chome-2-15 Honmachi, Maebashi, Gunma 371-0023, Japan.


Sou Fujimoto was born in Hokkaido, Japan on August 4, 1971. In 1994 he graduated in architecture at the Faculty of Engineering, University of Tokyo. He established his own architecture studio, the agency Sou Fujimoto Architects, in Tokyo in 2000, and since 2007 a ​​professor at Kyoto University.

He was first noticed in 2005 when he won the prestigious AR – international Architectural Review Awards in the Young architect’s category, a prize that he garnered for three consecutive years, and the Top Prize in 2006.

In 2008, he was invited to jury these very AR Awards. The same year he won the JIA (Japan Institute of Architects) prize and the highest recognition from the World Architecture Festival, in the Private House section. In 2009, the magazine Wallpaper* accorded him their Design Award.
 Sou Fujimoto published “Primitive Future” in 2008, the year’s best-selling architectural text. His architectural design, consistently searching for new forms and spaces between nature and artifice.

Sou Fujimoto became the youngest architect to design the annual summer pavilion for London’s Serpentine Gallery in 2013, and has won several awards, notably a Golden Lion for the Japan Pavilion at the 2012 Venice Architecture Biennale and The Wall Street Journal Architecture Innovator Award in 2014.

Photographer: David Vintiner




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