Shanghai World Expo set to open

sacbee.com — Visitors to Shanghai's World Expo say organizers have plenty of kinks to iron out before the event -- the biggest-ever World's Fair -- formally opens on May Day. Some 70 million people are expected to visit. The Expo runs May 1-Oct. 31. Elevated highways are illuminated by LED lights on April 18, in Shanghai, China.
 

 In this photo taken Sunday, March 28, and released by the Shanghai Pacific Institute for International Strategy, the World Expo site is illuminated in Shanghai, China. (AP Photo/ Shanghai Pacific Institute for International Strategy) AP

Elevated highways are illuminated by LED lights on April 18, in Shanghai, China. Shanghai World Expo will be held from May 1 to Oct 31, expecting 70 million visitors. Getty Images / Feng Li

Please click here for the gallery: The Biggest-Ever World's Fair in Shanghai