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Royal Caribbean's Voyager-class ships, which set sail in 1999, pioneered the horizontal atrium built deep into the vessel's heart. Cheaper rooms that once had only a porthole instead could get atrium-facing balconies. The 200-foot-longer Oasis-class ships will have several such spaces, each with a different theme

Last updated August 18 2008: 10:09 AM ET
World Trade Center With an estimated $20 billion pricetag, the WTC redevelopment is one of the most expensive ongoing projects in the world. (more)
Oil city Reliance Industries is spending $6 billion to expand a massive refining hub in India that is one-third the area of Manhattan and will one day process 5% of the world's gasoline. (more)