The six horn-shaped "Sunny Valley" structures that line the 600-meter boulevard that will act as the main entrance to the World Expo 2010 site have been completed.
The 40-meter-high horns will disperse sunshine into the below-ground walkway linking the Metro station and the Expo site and will collect rainfall for watering and cleaning.
More than 50 percent of the 70 million expected visitors will enter the Expo site from the boulevard.
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