Snack on a partially gestated duck egg.

This ancient Chinese observatory still contains early astronomy technology.

The world's longest outdoor escalator takes visitors to the top of China's largest dam and is also shaped like a dragon.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

This legendary urban waterfall creates a dazzling display of rainbows.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

A historical puzzle lies at the origins of this structure.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

It's believed Matilda Fitzwalter's life was the basis for the famed literary figure.

Red rock "fangs" jut out of the desert near the Extraterrestrial Highway.

A fascinating example of the Danxia landform is characterized by its striking red sandstone formations.

This magnificent natural sandstone bridge is one of the largest in the world and is an iconic symbol for Lake Powell.

A prison tower–like edifice honoring a beloved local benefactor.

A 150-year-old steam locomotive crosses the southern half of the island daily.

This unique rock formation has become a popular walking trail.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Few remain of these distinctive old trees that once served as natural landmarks for travelers on the road.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

Built in 1547, these ruins lie on a rocky promontory in Ballintoy jutting into the wild ocean waters below.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

A trail of "Game of Thrones"-themed doors carved from fallen trees from the iconic Dark Hedges.

The atmospheric road was never meant to be so creepy.