In this photo taken Monday Jan. 7, 2013, a light installation - 

In this photo taken Monday Jan. 7, 2013, a light installation - Pink Caravan, illuminates the National Theatre, during the Helsinki Lux Festival in the Finland's capital city. Finland's capital is aglow with colorful light bulbs and lasers piercing the black winter skies and lighting up downtown buildings as the Helsinki Lux Festival provides a much-needed burst of illumination during the darkest days of the year. (AP Photo/Lehtikuva, Jarno Mela) FINLAND OUT
Associated Press
In this photo taken Monday Jan. 7, 2013, a light installation - Pink Caravan, illuminates the National Theatre, during the Helsinki Lux Festival in the Finland's capital city. Finland's capital is aglow with colorful light bulbs and lasers piercing the black winter skies and lighting up downtown buildings as the Helsinki Lux Festival provides a much-needed burst of illumination during the darkest days of the year. (AP Photo/Lehtikuva, Jarno Mela) FINLAND OUT
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