This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A series of carved figures that scandalized British society.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

You were once able to challenge a chicken to tic-tac-toe at this park, which is now converted into the Aikman Wildlife Adventure.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

Beloved bar home to musicians of all eras and reputations.

Century-old shop, specializing in Occult products.

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.

A unique workspace where offices reside on pirate ships and inside gingerbread houses.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

This quaint mortuary chapel hides a stunning Celtic Revival and Art Nouveau interior.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

400-year-old garden, restored to beauty.

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

During this yearly Welsh swimming race, competitors tread through the fetid waters of a bog trench.

This Jewish bakery, among the last in the region, sells legendary sweets from a century-old storefront.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.