This remote fort on the Yukon River is a vestige of the wild Alaska gold rush.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Stumps of an Ice Age forest, visible only at low tide.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

This crocodile-infested East Timor reservoir is also home to a spectacular half-sunken forest.

The home of Ireland's last leprechauns is officially protected by the European Union.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

Just saying the name of this town out loud is said to bring bad luck.

This trail follows unique stone railroad tracks and a historic waterway to the south coast of Devon.

The Gunditjmara Aboriginal people of Australia began construction on this vast aquacultural complex 6,600 years ago.

This beautiful Croatian fortress is haunted by legends of forbidden love.

This picturesque medieval monastery guards a small trove of historic treasures.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

An ethereal glowing blue ocean cave in Croatia.

A railway bridge leading nowhere stands lonely in the middle of a meadow.

At high tide this strange footbridge appears to have no purpose whatsoever.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Modern art meets modern convenience in possibly the world's most architecturally important public bathroom.

The composer known as the "Swedish Mozart" arranged to be buried in an unusual spot.

A hidden oasis just two minutes from downtown Atlanta.