A collection of intricate sculptures so small they have to be seen through a microscope.

A medieval military street hidden beneath a charming French fishing village.

This gnarled old tree supposedly sprouted from seeds kept in the pocket of a 16th-century Spanish sailor.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

A collection of over 15,000 zines works to preserve DIY publishing culture.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

This ghost town was once a cult-like religious utopian settlement.

Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

An impressive collection is dedicated to the legendary beast.

The Brutalist building harbors an unusual inverted dome that swoops down over its central sacred room.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

The Belgian library displays burned books that were salvaged from the fires of both world wars.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

A cluster of granite granaries perched on stilts.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

A collection of 16,000 antlers crammed beautifully into a small shed.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

Hidden dwellings in the cliffsides of North Togo used by local Moba tribes to evade 18th-century slave traders.

A spitting ode to a German serial killer.