Tubing through a cave lit with glowworms is a magical underground experience.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

A submerged archeological park still holds the wonders of a Roman Sodom.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

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

Walk behind a 50-meter-high waterfall.

A small town Romanian cemetery filled with darkly humorous gravestones.

The angel of death appears to weep black tears at this grave marker.

Half of a waterfall goes into the river while the other half seems to disappear.

A fiery crater has been burning in the Karakum Desert since 1971.

A sacred mountaintop temple offers a fine cup of tea to visitors who can survive the journey.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

Eurasia's most difficult place to hang out, and farthest point from sea access.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

A rare pod of derelict midcentury Futuro and Venturo houses lines a semi-abandoned beachfront resort outside Taipei.

A mapping error in the 19th century made loggers think this section of the forest was underwater.

A slingshot from this delightful collection is awarded each year to someone who has "pulled metaphorical slings in favor of the weak and marginalized."

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.