This small chapel is built of human bones and decorated with a golden skeleton.

Dead weights honor the dead of Portugal's fishing industry.

Perhaps the most spectacular grotto along the Algarve coastline.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

A remarkably opulent mansion with a tragic history.

A grove of "candelabra redwoods" deep in California's Lost Coast.

The first patented shaved-ice machine heralded a snowy wonderland of iced treats at a favorite New Orleans summer shack.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

This natural wonderland is a unique chance to explore a Carolina bay, a mysterious geological formation of unknown origin.

North America's oldest authentic African Village.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

The language and heritage of a nearly forgotten culture can still be explored in this Southern enclave.

A rapidly disappearing authentic bit of the old south.

A quirky Poe-themed joint on an island keen to celebrate its overlooked connection to the famous writer.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

Bridge that died in war and was resurected.

A war-torn Olympic relic is being overtaken by graffiti and nature.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

Trek through the jungle on a boat and a swinging bridge and you'll be rewarded with these refreshing, if pungent, mineral pools.

A former 19th-century tavern, famous for its peach brandy and honey concoction.