UNStudio
Tea House on bunker
Vreeland, the Netherlands
The stainless steel addition appears to have grown out of the still visible concrete facades of the bunker.

Photo: Christian Richters
The original bunker, situated in a classic Dutch polder landscape, is part of an intricate water management system that enabled the inundation of land in case of attack. The project involved the renovation and a new addition to the historical, derelict building.
The new addition, surrounded by stables and polo fields, is intended as a large space with facilities to support a meeting space or business retreat.

Photo: Christian Richters

Photo: Christian Richters
The existing 1936 bunker remains intact except where the new structure connects to a portion of the concrete roof, like an umbrella that can be removed without damaging or permanently influencing the historic structure.
Entrance to the building is between the facade of the existing bunker, which remains uncovered, and the stainless steel facade of the new the addition.

Photo: Christian Richters

Photo: Christian Richters

Photo: Christian Richters
The seamless, stainless steel addition appears to have grown out of the still visible concrete facades of the bunker, cantilevering out towards the sports fields with its large single window.

Photo: Christian Richters

Photo: Christian Richters
Steel structures, within its two main walls, function as one story high beams. The beams are balanced off center on two columns that land directly in front of the existing bunker.
Stability is achieved by using the massive concrete shell of the bunker as a counterweight, offsetting the forces of the cantilevering extension by connecting it with the two beams.

Drawing courtesy UNStudio

Model photo courtesy UNStudio

Model photo courtesy UNStudio

Model photo courtesy UNStudio

Drawing courtesy UNStudio
Site Plan

Drawing courtesy UNStudio
Ground Level Plan

Drawing courtesy UNStudio
First Floor Plan
Building site: 54 square meters
Gross floor area: 80 square meters
Completed: 2006
Client: Cor van Zadelhoff
Design: UNStudio
Ben van Berkel
Gerard Loozekoot
René Wysk
Job Mouwen
Marcel Buis
Thomas de Vries
Holger Hoffmann
Eric den Eerzamen
Joakim Kaminsky
Peter Irmscher
Daniel Kalani
Anika Voigt
Eric Coppolse
Stephan Albrecht
Project management: Rietmeyer, Almere
Ronald Cos
Geert Wilmink
Constructural engineer: ABT, Velp
Rob Nijsse
Construction: ABT, Velp
Rob Nijsse
Stephan Toonen
Installation: ABT, Velp
Onno Janse
Construction physics: ABT, Velp
Mark van Veghel
Lighting exterior: Arup lighting
Rogeier van der Heide
Marion Tränkle
UNStudio arcspace features
February 19, 2007
