Koga Park Café

Koga Park Café
Koga Park Café, Ibaraki, Japan
Interactive map of the Koga Park Café area
General information
StatusCompleted
Location399-1 Konosu, Koga, Ibaraki 306-0041, Japan
Construction started1997
Completed1998
Technical details
MaterialStainless steel, Glass
Design and construction
Architects
Architecture firmSANAA

Koga Park Café is a restaurant located in the Park of Koga in Ibaraki, sixty kilometers north of Tokyo, Japan.[1] It was constructed between 1996 and 1998 by engineer Mutsuro Sasaki (b.1946), and designed by the Japanese architectural firm, SANAA, run by Kazuyo Sejima (b.1956) and Ryuei Nishizawa (b.1966).[2][3][4]

During the construction of the café, one of the design constraints put forth by the municipal corporation was to ensure that half of the plot should be an exterior/semi-covered space, while the other half comprises both interior and exterior spaces. As a result, the café and the two terraces are separated by glazing and sliding doors that open to the park landscape, allowing the interior to merge with the exterior while still being connected to the terraces.[2][4][5]

The building assumes a cuboidal form, resting against a gentle hill slope on the north and overlooking a lake on the south.[1][2] The four facades are enclosed in transparent glass, offering a panoramic view of the park that stretches across 25 hectares in surface area.[1][2] The building is characterized by reduced physical presence of the elements to preserve the natural environment as much as possible.[1][4] To accomplish this, the structure has a rectangular footprint topped with a single roof of a 25 millimeter steel plate. This roof is supported by 100 tubular steel posts that are three metres tall and approximately 60 millimeters in diameter.[5] They successfully take on vertical stress, and are placed randomly within the building but when around the periphery, they form a peristyle.[2][5] The horizontal stress is managed by four 60 millimeter thick steel-plate shear panels that are installed at each end. The mirror-finish stainless steel together with reflectant furnishings create a "symbiotic effect with the landscape." This effect lends a neutral and immaterial appearance to the pavilion, emphasizing spatial ambiguity and transforming the building into "another element of the natural context, rather than a solid object placed on the landscape."[1][6]

The café was completed during the early years of SANAA, acting as a prototype for the firm's "unified, horizontal, non-hierarchical" approach to architecture.[7]

References

  1. ^ a b c d e "Koga Park Café, Ibaraki - SANAA". Arquitectura Viva. Retrieved 2025-11-26.
  2. ^ a b c d e Takashi Ono (2018-01-01). "Pushing Limits of Leanness in Japanese Architecture: Modern Interpretations of the Frame Structure through Collaboration of Japanese Architects with Structural Engineers" (Portable Document Format, Online. Chitkara School of Planning and Architecture). Journal of Creative Space. 5 (2). Punjab, Rajpura, India: Chitkara University: 71–80. doi:10.15415/cs.2018.52002. eISSN 2321-7154. ISSN 2321-3892.
  3. ^ "Transparent and Weightless: The Ethereal Architecture of Kazuyo Sejima – Asian Art and Architecture". Retrieved 2025-11-26.
  4. ^ a b c "Park Café en Koga [Artículo] = Koga Park Café : 1996-1998, Ibaraki (Japón, Japan)". biblioteca.artium.eus (in Spanish). 2006. Retrieved 2025-11-26.
  5. ^ a b c "Park Café in Koga, Japan" (PDF). Archplus (in German). 2025.
  6. ^ "Koga Park Café – Asian Art and Architecture". Retrieved 2025-11-26.
  7. ^ "SPACE-[THE CAFÉ PHENOMENON] Cafés from Across the History of Architecture". www.vmspace.com (in Korean). Retrieved 2025-11-26.