This giant wooden treehouse within a sprawling garden has its own eatery.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Inside a beautiful Indian temple is a seemingly magical floating pillar that doesn't touch the ground.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

With print dying, this local paper keeps the lights on by doubling as a stunning cafe and cocktail bar.

According to this bar, God gave an “11th commandment” to Antwerp: Thou shalt drink beer.

This whimsical fountain pays tribute to Toronto's four-legged friends.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This astronomical clock is the second oldest in England.

The ruins of this medieval castle on a foggy hill tell the story of a once-mighty empire.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

This fortress played a key role in the battle that would ultimately give rise to the Maratha Empire.

The tallest waterfall in the Judean Desert is named for its connection to a biblical figure.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

Abandoned bridge hidden deep in the San Gabriel Mountains.

On the Oregon coast there is a natural hole that seems to be draining the sea.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

An abandoned hotel in the highlands of Bali is shrouded in stories of ghosts, curses, and corruption.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

Named for the biblical warrior, the largest castle in Israel actually dates to the Middle Ages.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.