Countless stories attempt to explain Poland's mysterious J-shaped trees.

This imposing 20th-century castle was abandoned before it was ever completed.

These massive moving sand dunes have swallowed an entire village and are still on the run.

The coffin-shaped church was once home to monks who slept in coffins.

A World War II torpedo launch station abandoned off the Polish coast.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

Plenty of old carney magic still haunts this photogenic amusement park.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

This frequently-photographed waterfall takes only a short hike to visit.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

Only known mainland rookery of the threatened Stellar sea lion.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

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

The second tallest railway trestle bridge in America.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.

A giant Troll lurks under one of Seattle's oldest bridges.

A short hike into the mountainside forest reveals a decaying 1890s town.

100-year-old shipwreck you can walk up to at low tide.

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

Formerly secret, precariously perched boulders.