Viganella, Italy is cut off from direct sunlight for 83 days in the winter due to the surrounding mountains, so they set up a giant, computer-controlled mirror on top of the mountainside to reflect the sun’s rays onto the town.


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Viganella, Italy is cut off from direct sunlight for 83 days in the winter due to the surrounding mountains, so they set up a giant, computer-controlled mirror on top of the mountainside to reflect the sun’s rays onto the town.

For its extreme landscape position, the town does not get direct sunlight for 83 days per year, between November and January. In November 2006 local administrators set up a giant mirror with adjustable, computer-controlled orientation on the mountainside, consisting of 14 sheets of steel which together are 8 metres (26 ft) wide and 5 metres (16 ft) high. The mirror functions as a heliostat, tracking the sun so that sunlight always reflects onto the town square. The mirror was built at a cost of €100,000, or approximately €540 per resident.


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