A beautiful gorge filled with streams and waterfalls.

These unique "earth pyramid" clay columns can be found in ravines around the village of Tirolo.

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

This man-made waterfall was designed to help improve access for spawning salmon.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

The only quarter of the Old City not dedicated to a major world religion.

Less a museum than a bizarre fantasy world created by artists and engineers.

These delicate sand pyramids look like naturally occurring gothic spires.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

A 14th-century abbey founded by a forest-loving order of monks now sits in the center of a pristine nature preserve.

A sea cave with a waterfall and Viking past

A stunning Victorian abbey and walled garden on a lakefront.

This dome-shaped mountain boasts amazing views and has a rich religious history.

Geothermal waterfalls in Tuscany.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

A massive sea stack famous for its appearance in The Goonies.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

Hollowed out cedar log tubs set in an ancient towering forest.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A small house sits between two huge rocks, with its back to the sea.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.