Once used to protect important Roman trade routes.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

A tiny, heartwarming piece of art hiding in plain sight.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

A stone wall commemorates the legend of a ferocious dragon who literally got his butt kicked by a knight.

Helped by a surprise posthumous donation this small town toy museum features over 5,000 vintage playthings.

This round structure dotted with portals is one of several pieces scattered throughout Lancashire.

A stone obelisk towering over the surrounding countrysides beckons hikers across the rolling moors.

Lewis Carroll's White Rabbit or something else altogether?

What looks like missing grout is actually an old pub's peephole.

This hulking behemoth is actually five interconnected towers built in the 1960s.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

In Hong Kong, a fairytale flower tunnel is hidden within the gardens of a public housing complex.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

Climb to the top of the world's largest seated bronze Buddha.

Thousands of abandoned statues of deities are taken to this hillside in southern Hong Kong.

A pair of trees near a Hong Kong shrine are said to grant wishes, but only the ones they hold on to.

A lavish Victorian mansion wound up inheriting a gruesome reputation that would be its demise.

The photographs of "fairies" that fooled much of the world (including the creator of Sherlock Homes) were taken at this English stream.

The wreck of a B-29 Superfortress now stands as a memorial left in the moors.

At night, the enormous sculpture looks like a UFO hovering above the English hills.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

This witch statue remembers a time in England's history when fear trumped truth.