Dutch Prince Willem-Alexander (L) and Princess Maxima visit the Netherlands Pavilion at the 2010 World Expo in Shanghai, east China, May 18, 2010, the National Pavilion Day of Netherlands. [Xinhua]

Dutch Prince Willem-Alexander (2nd R) and Princess Maxima (3rd R) visit the Netherlands Pavilion at the 2010 World Expo in Shanghai, east China, May 18, 2010, the National Pavilion Day of Netherlands. [Xinhua]