|Architectural style||Modern (Nieuwe Bouwen)|
|Address||Loosdrechtse Bos 5-21|
|Design and construction|
|Architect||Jan Duiker, Bijvoet|
The estate Zonnestraal is a former sanatorium in Hilversum, Netherlands. The building was designed by architect Jan Duiker and is an example of the Nieuwe Bouwen. In 1995, the estate was submitted to UNESCO's list of World Heritage Sites, and it is currently on the tentative list.
Zonnestraal was built as a tuberculosis sanatorium in the 1920s and 1930s. The building features the classic design of the sanatorium, which focuses on as much open space and fresh air as possible. However, it still embodies the definition of the modern architecture by the immense amount of repetition and the avoidance of superfluous decoration. The building is mostly made of transparent materials to allow as much light as possible to enter the patient's rooms. With this transparency, the building runs a large risk of overheating. However, the architects understood these risks and incorporated a cooling system in the building; something that was not common at this point in time. The surfaces that are not transparent are very sterile and smooth in appearance making very hygienic surroundings. The buildings are arranged in a loose "pin-wheel" design that created separation between patients' rooms, giving each of them the adequate amount of sunlight needed for therapy. The distribution of space in this manner created the ability for every patient to have a sunbathing balcony that was unobstructed by any other patient's room or building. The design of this architecture can be referred to as Heliotherapeutic Architecture (Light therapy) and was actually a short lived style in its purpose for therapy because of the discovery of the cure for tuberculosis. However, this style focuses on the engineering required to satisfy the patient's needs. In fact, the architects preferred to refer to themselves as building engineers. After abandonment in the 1980s the building was submitted to UNESCO's list of World Heritage Sites. However, with this submittal, the building's structural deterioration could not be solved by demolition and rebuilding. Instead new techniques of concrete repair had to be used.
Effects on Modern Architecture
The presence of tuberculosis and the sanatorium played a large role in modern architecture. Though it was not the first building to feature a nearly all glass architecture, after the sanatorium period, the style of all glass buildings stayed a constant in modern architecture. It has been said that the famous Paimio Sanatorium was greatly influenced by Zonnestraal and its organization of space does not stray far from this design. With the construction of sanatoriums worldwide, the public began to see the importance of increases hygiene in their homes. It did not take long until many people were designing their homes after the spacious sanatoriums. These buildings include Sir Arthur Bliss' house built in Surrey or the famous Lovell House designed by Richard Neutra.
- Architectuur. Zonnestraal. Retrieved on 2009-07-23.
- Voormalige Nazorgkolonie en Sanatorium 'Zonnestraal' (former Aftercare Colony and 'Sunray' Sanatorium). UNESCO World Heritage Centre. Retrieved on 2009-07-23.
- The Challenge of Charge. Retrieved on 2012-11-25.
- Concrete Repair and Material Authenticity. Retrieved on 2013-11-25.
- What Tuberculosis did for Modernism. Retrieved on 2013-11-25.
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