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

One man handcrafts "the best sake made outside of Japan" in a tiny desert town on Route 66.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

The lost ruins of the forgotten ferry lie hidden beneath the silt.

This sanguine boulevard was named after a deadly cowboy bar fight.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

This golf ball–shaped former desert real estate office now houses a UFO museum.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

See massive fossils that are over 200 million years old in northeastern Arizona.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

Blackfoot petroglyphs of southern Alberta which date back as far as 7000 B.C.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

A forest park outside Tallinn full of architectural and artistic curiosities.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The magical, mossy forest that inspired Princess Mononoke.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A curious friendship between two inanimate ladies.

Caligula's colossal pleasure ships, discovered by Mussolini only to be lost in flames.

Mysterious tombstones thought to be remnants of Atlantis.