Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

A few dilapidated structures are all that remain of this deserted former silver mining town.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

A preserved block of timber buildings from the city's industrial era in the Middle Ages.

The only international border marker within the United States.

A natural wonder in south Denmark.

A grandiose octagonal home crowned by a large dome stands out among the antebellum mansions.

One of the largest megalithic complexes in England, which local legend holds is a wedding party turned to stone by the Devil.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

Double spiral staircases are not unheard of, but they are very rare.

Monkeys lounge around at this 13th century temple.

A small burial plot formerly stranded in the middle of a road.

A public fountain that spouts "health water" from a nearby spring.

This centuries-old canal known as the Cuckoo Dyke has a staircase of locks suitable for a giant.

This snug medieval lane is one of the narrowest streets in the world.

Decades before the scandal, this staircase on the river was a literal "water gate."

A cheeky architectural easter egg.

The Grand Canyon of Texas.

A beautiful, creepy 19th-century castle stands incongruous in rural Vermont.

A more chill but no less fascinating version of the famous ancient archeological site.

A perfectly preserved hill village where the buildings are painted like white lace.