World Expo

As host of the World Expo, Shanghai is opening its doors to the world. But with most of the Expo's visitors hailing from within China, it's much more of an international marketing effort for non-Chinese countries directed at the emerging super power.

As Shanghai prepares to host the World Expo beginning next month, the aftertaste of over-investment in Beijing's 2008 Summer Olympics and that event's now-empty venues is causing some to question the wisdom of the Expo and its long-term impact.

Shanghai is preparing to host the 2010 World Expo -- an event that's costing more than $45 billion. While officials hope the event will be a boon for tourism, locals question whether the investment will pay off.

2010 will bring with it a series of huge international events -- the Winter Olympics in Vancouver, the World Cup in South Africa and the World Expo in Shanghai. Though seen as major opportunities for their hosts, these events can also be dangerous.

As the host of the 2010 World Expo, Shanghai is sparing no expense. Civic investment and projects are expected to eclipse those of Beijing when it hosted the 2008 Summer Olympics.