This mysterious Bronze Age standing stone has become a place where couples profess their love.

This medieval castle was home to a known tyrant and features several hidden passages.

This mountain trail inspired Nietzsche to complete his magnum opus.

This Copper beech tree nestled on a nature reserve is host to a bevy of autographs from Irish literary icons.

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

A Wes Anderson-esque lighthouse that boasts magnificent coastal views.

This fairytale-looking castle is a wonderful example of Greek neo-Gothic architecture

A large concrete replica of a 12th-century figurine.

An omelette made with over 1,000 eggs may have been prepared when Holy Roman Emperor Charles V visited this monastery.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

This metal church may or may not have been designed by Alexandre-Gustave Eiffel.

Huge hole looks down onto an underground beach populated with sea lions.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

The lost ruins of the forgotten ferry lie hidden beneath the silt.

An ill-fated attempt to grow wheat in the sagebrush steppe of northeastern Nevada.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

At the time of its completion, it was the tallest dam in the world.

One man's ambition created this psychedelic log home.

No Gordon Lightfoot song, only a barebones monument to greed.

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

See just what life was like in a 19th-century prospecting town.