A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

Fossils, railroads, and waterfalls!

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

A real flying saucer, contracted by the U.S. Air Force.

Regency-era excess on the English Coast.

Single runway interrupted by a busy road that cuts across its middle.

Historic site where Native American hunters once trapped and killed buffalo.

The site of Paul Revere's historic two lantern warning.

Khmer Rouge's high security prison.

Ancient paintings known as the "Sistine Chapel of Cave Art."

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Copenhagen's celebrated theme park and gardens.

The world's longest known cave system.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Race through the maze, get your name on the sign.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

Home to three historic ships from the age of Vikings.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Historic medieval fortified city in southwest France.

Home to the deepest rift anywhere on Earth.

The largest source of fossilized insects anywhere.