Stunning wetlands ablaze with pink lotus flowers.

A white Buddhist temple with a golden restroom.

Secret North Korean passage discovered below the world's most dangerous border.

A part of the world's largest marsh seems to be growing bright red Martian grass.

Every autumn, this hillside is ablaze with red summer cypress.

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

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

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

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Ruins of a German Castle on top of a towering stone pillar.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

An ethereal glowing blue ocean cave in Croatia.

Roman ruins top white travertine terraces formed by ancient hot springs.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.