A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A journey through a collection of classic cars and fashionable artwork.

Enjoy coffee and cake while viewing antique medical equipment at this unique cafe.

Three rooms of bones, curios, and one artist's collection of natural artifacts create this intriguing museum.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

Known for the tunnel that leads visitors to the water.

A glacier pocked with ice caves and surrounded by rainforests.

One man's dream has turned into this naturally growing chapel made of almost nothing but trees.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

Tubing through a cave lit with glowworms is a magical underground experience.

Amazing taxidermy dioramas from the 1960s in a cement building meant to look like an ice cave.

Tucked in the back of this amazing antique store is an important piece of medical history.

Jimi Hendrix's legendary recording studio in Greenwich Village.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

A semi-scholarly approach to sex.

New York's oldest magic store.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.