The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

This famous city eluded concrete detection until the early 2000's.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

A marvel of Byzantine engineering under the streets of Istanbul.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

This natural wonder is disappearing at an alarming rate.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This historic Victorian hotel has a scandalous history of affairs and murder.

Few other hotels can rival the grandeur of the Castle in the Rockies.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Monument that stands 40 feet and weighs 1,000 pounds.

Taxidermy of the racing horse with a huge heart, who inspired hope in the Depression.

There's nothing shrimpy about the world's largest artificial prawn.

This giant dish located in a sheep paddock was the primary receiver of Apollo 11 TV transmissions.

One of the first big sculptures anywhere in Australia.

One of Australia's famed "Big Things," this giant fruit was once stolen as part of a publicity stunt.

The once-dying town of Sheffield, Tasmania has reinvented itself as a village of painted wonders.

A giant Australian fruit and tropical farm.

After much poking and prodding, this island is decidedly not a magnetic anomaly, but it sure is pretty.

Granite rocks that concentrate waves into powerful jets.