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| Client | Stadt Thun |
| Commission | study commission on invitation 2009 |
| Planning | 2009–2013 |
| Construction | 2013–2014 |
| Architects | Graber & Steiger Architekten, Project Architect: Urs Schmid |
| Consultants | Construction manager: Gassner & Leuenberger, Structural engineer: Dr. Schwartz Consulting, Façade engineering: Metallprojekt GmbH, Building physicist: RSP AG |
| Photographer | D.M. Wehrli |
The oldest still existent panorama painting in the world, the Thun Panorama, painted by Marquard Wocher between 1809 and 1814, was comprehensively renovated in 2014. The rotunda designed by the Thun City Architect Karl Keller in 1959, which has housed the panorama painting since the early 1960s, has also been renovated and enhanced by an annexe building. During this transformation, existing aspects of content, architecture and landscape were picked up on, reinterpreted and atmospherically condensed. The pavilion-like, transparent extension building, which transfers the circular geometry of the existing structures to gentle curves in the rectangular exhibition space, is like the antithesis of the introverted rotunda. Thanks to structurally similar characteristics, it enters into a quasi-symbiotic relationship with it, as old and new merge into an inextricable ensemble.

'PoroCity - Enabling Structures by Graber & Steiger Architects' is a site-specific spatial installation that developed for the exhibition in Dhaka. At the venue of Kalakendra and the adjacent urban space, the installation explores the concept of "enabling structures" in different architectural and urban scales.
Porous structures can be a solid basis for welcoming places and unfold a permeable framework for lively social interactions and future-oriented transformations. Through a balanced character, built structures can be enablers for a resource-optimised, sustainable design of living spaces.
The ephemerally conceived exhibition provides a small insight into our works, which strive for permeable spatial structures that invite free appropriation by the users. The opportunity to present buildings and projects far away from their context of origin can stimulate a dialogue about specifically local, but also universal aspects of architectural structures. We can thus expect a critical examination of hitherto familiar design approaches, which can show us broader perspectives.
The scenographic setting of the installation is embedded in a circular concept of reusing the modular exhibition structure in the everyday life of Dhaka's micro-urbanism. Besides the visitors of the exhibition, every city dweller is invited to participate in the concept of "Enabling Structures" in the long run by reusing the micro-structures designed for the exhibition.
The exhibition is support by Swiss Cultural Council ProHelvetia.
8 - 29 May 2023
8 May 2023, 6:30 pm
Kalakendra Art Space, Lalmatia Dhaka