Sapporo White Illumination [Japan]
Sapporo White Illumination [28th Anniversary] is a big event which marks the coming of the snow season in the capital city of Japan’s northernmost prefecture of Hokkaido. Started in 1981, Sapporo White Illumination features romantic, artistic collaboration of nature and light after dark in the northern region, usually with the background of the white snow. Trees or objects d’art in Odori or main downtown areas light up the surroundings, making the snow-world even more mysterious and fascinating.
Trees and objects in Odori Park in Sapporo’s main downtown district are lit up from November 28th, 2008 [Fri] to January 4th, 2009 [Sun]
Here are some past year lights: 
Visit: [Japanese Site] Sapporo White Illumination