The latest art work at Shibuya station. This painting is 30-meter-long painted by the Japanese artist Taro Okamato. It is titled “Myth of Tomorrow”. It was lost for many years and discovered in 2003 in Mexico. Its location at Shibuya puts it in front of an audience of hundreds of thousands of people.
Here are some more links about this story
http://www.nihonsun.com/2008/11/13/myth-of-tomorrow-in-shibuya/