The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A walk through the historic city center, under the streets of Seattle.

Dramatic river bend surrounds a natural red-rocked pedestal.

France's most famous cemetery, with some of its most curious tombs.

A snapshot of the city's fascinating voodoo culture.

Most-visited and most-photographed slot canyon in the American Southwest.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A park where people have been going to feed friendly pigeons since the 18th century

This museum preserves the heyday of Puerto Rican coffee.

This colorful gate stands as an entrance to the walled city of Old San Juan.

This giant bronze image of Christopher Columbus embarked on a voyage of its own.

An unnatural lake in a naturally beautiful setting.

Invading U.S. troops were first seen from this now-abandoned tower, leading to the Spanish-American War.

The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

This tiny home was originally a narrow alleyway.

This former sugarcane transport tunnel is now a portal to a lovely beach.

The world's second largest single-dish radio telescope, once used to contact E.T.

On this Puerto Rican island, many abandoned naval ammunition bunkers sit open while a few have been padlocked by locals as personal storage.

The world's brightest bioluminescent bay.