Uggleviksreservoaren, Water tower in Lilljansskogen forest, Stockholm, Sweden.
Uggleviksreservoaren is a water storage facility in the Lilljansskogen forest near Stockholm, held up by 64 concrete columns. The structure contains a large rectangular tank that supplies water to the surrounding areas.
This water tower was designed in 1935 by architect Paul Hedqvist as part of Stockholm's infrastructure expansion during the 1930s. The structure reflects the city's need to support its growing population with modern water systems.
The reservoir represents the industrial architecture of Stockholm during the 1930s, marking a period of municipal infrastructure development.
The structure sits in a forested area that is easily accessible by foot, with parking and walking paths nearby. Getting there from the city center takes about ten minutes on foot from the nearby KTH area.
The tank was deliberately left uninsulated: calculations showed that at an outside temperature of −25 °C the 18,000 m³ of water would cool only a few tenths of a degree, and the cold winters of the early 1940s confirmed it. A thin ice layer formed but broke up with the constant changes in water level.
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