More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

A Hell's Kitchen synagogue that has counted stars of stage and screen among its congregation.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

An amazing collection of curiosities hidden in a small Welsh village.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

An unusual round church in London with a Templar past.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

This coffee shop lies hidden beneath a historic church.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

This luxury shopping lane has been protected by its own tiny police force for over a century.

This fairytale-like structure is the last turf church ever constructed in Iceland.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Three columns of volcanic rock shoot out of the ocean.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

A winding, blood-red tunnel of hardened lava navigable by foot.

Learn about Iceland's hidden folk at this school dedicated to the study of elves.

The largest single concentration of harmless garter snakes in the world is a writhing Canadian serpent orgy.

The only fully operational windmill in Canada.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

More gold than anywhere else, ever.