Air date: 2007-01-14

Runtime: 47 min

A rescue tunnel is needed to free one of the world's largest machines stuck in the world's longest tunnel in the Swiss Alps.

Air date: 2007-02-11

Runtime: 46 min

Following the construction of the longest, fastest and tallest roller coaster, the Tatsu, located at the Six Flags Magic Mountain in Valencia, California.

Air date: 2006-10-29

Runtime: 47 min

Under a sweltering sun in the heart of Madrid, Spanish construction workers are working non-stop on the largest highway project in the world.

Air date: 2007-01-26

Runtime: 47 min

For 15 years, Canadian diving enthusiasts have been trying to turn the coastal waters off southern British Columbia into the wreck-diving capital.

Air date: 2007-01-28

Runtime: 47 min

A look at the complex construction of the new 13km double span bridge in Bangkok, Thailand.

Air date: 2007-11-05

Runtime: 47 min

In a rugged canyon, down river from the Hoover Dam, a team of construction veterans is building the biggest concrete-arch bridge on the continent.

Air date: 2007-01-14

Runtime: 47 min

As the awesome mega-project goes under the hammer, a look at how the Burj Dubai in the United Arab Emirates is set to become the tallest building on Earth.