This single-track road rewards brave drivers with stunning Scottish scenery.

These little-known sands dunes are a geological anomaly in Saskatchewan's southern prairies.

The location of Puerto Rico's first water bottling plant, thanks to a collaboration between Mother Nature and technology.

A unique attraction and museum dedicated to exploring iconic roadside structures.

This natural history museum houses one of the world's largest rat kings, a terrifying jumble of tangled rodents.

A swath of France so devastated by war it is still forbidden to go there.

This museum dedicated to divination also honors a local 10th-century prophetess.

The narrowest street in Paris.

Home of an evil witch famous within southern folklore.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

The final resting place of New England's last "vampire."

An otherworldly, fossil-rich cobble beach holds Viking graves, cairns, and other remains.

This tiny square mile of Canadian sand was once considered the world's smallest desert.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

A miniature desert appears out of nowhere on the lush isle of Lemnos, like something out of a Greek myth.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

This tiny patch of arid sand sits in one of the greenest states in the United States.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

The colorful stairs are made with marble from the world's major quarries.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

This was once a hall in which a 16th-century royal banquet was hosted by King James VI of Scotland.

The fountain marks the area where hundreds of accused witches were burned at the stake.

The snowbirds here are circus sideshow performers.