Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

A theme park featuring a replica of Noah's Ark built to the measurements specified in the Bible.

After over 100 years out of service this landmark windmill once again turns as a symbol of Jerusalem's self-sufficiency.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

The home of the Dead Sea Scrolls is an abstract modernist dream.

A massive, heart-shaped, wind-carved crater in the middle of the Israeli desert.

A Biblically notable site over the ruins of an ancient city that is now a protected World Heritage site.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

Memorializing an American tragedy of massive proportions.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

This dramatic rail curve was once the target of a failed Nazi attack.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

Steepest flood safety railway in the entire world.