The only natural cave bath in all of Europe.

Built in 1906, this unique building was the first Hindu temple in the United States.

This Ibiza botanical garden showcases some wild machines that run on plants, literally.

Outside a small brewery, a Gothic fountain that once provided water to thirsty horses.

The second-largest giant sequoia in the world.

Thought to be the only herd of feral horses in Africa and one of the most isolated populations in the world.

This massive statue of John Muir on the side of a California highway was carved from a redwood tree.

These 250-year-old wagon tracks are a lasting sign of Dutch migrants crossing the mountains.

A private home envelops the ruins of this 13th-century priory.

Take a ride back in time with a steam locomotive trip through Eritrea’s mountainous countryside.

This ancient Corinthian helmet is South Korea’s only national treasure of Western origin.

This lighthouse sits within a glacial valley.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

View one man's eccentric collection of nearly 5,000 corkscrews, then sip some Chablis.

A unique collection of drawings that represent Fremont Native American culture.

A series of waterfalls create the illusion of perpetual rainfall in this hidden gorge.

At this ancient settlement at the foot of Mount Babadağ, honeycomb tombs are carved into a round cliff.

High in the Italian Alps, a lonely chapel with a striking view of the Matterhorn.

No one knows the origin of this creepy little stone man with an oversized phallus.

A handmade waterfall in Kanyakumari.

A major spiritual gathering place in central Maine since the mid-1800s.

A heavily politicized roundabout discussing the state of a heavily politicized country.

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

This life-size monument honors the legacy of a famous literary feline.