Dubai's Al Maktoum Airport, finished in 2010 for $82 billion, manages 8,000 flights weekly to 270+ destinations, with a runway built in 600 days.
Completed in 1977 for $8 billion, the Trans-Alaska Pipeline System spans 800 miles and has delivered over 17 billion barrels of oil by 2014
Completed in 2011 for $34.7 billion, China's Beijing-Shanghai high-speed railway is the world's longest, stretching 15,534 miles
Exploring the world's most costly construction projects, showcasing monumental expenses and engineering feats
The Petronas Twin Towers in Kuala Lumpur, Malaysia, were the world's tallest buildings from 1998 to 2004, costing $1.16 billion and completed in 1999