The Cistern in the park of Søndermarken - close to the zoo and just south of the the palace of Frederiksberg - is a vast underground reservoir that was constructed in the middle of the 19th century to hold fresh drinking water for the city. Its use as a reservoir ceased in 1933 but it was not until 1982 that the space was drained of water and in 1996 it was converted into an exhibition space that is now run as part of the Frederiksberg museum service.
The current installation, designed by the Japanese architect Hiroshi Sambuichi, brings water back into the subterranean space and uses natural light from above, controlled and directed by giant mirrors, to create a wonderful and disorientating experience with the space explored in deep gloom on broad walkways that have been constructed just above the water by Japanese craftsmen using timber from Japan.
To be discovered on this route through the dramatic space are a traditional Japanese wood bath tub; a giant clear-glass cube; a timber Japanese-style bridge that is crossed with the help of the light from paper lanterns and there is a mound of almost luminous, violent green, moss lit by light flooding down from the park above.
The opening times for the installation are controlled by the hours for sun rise and sun set and will change through the Summer and Autumn.