Inside a former cabaret, seven floors of erotic art.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

A snapshot of the city's fascinating voodoo culture.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

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

A museum of carnival attractions where you are invited to ride the rides.

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

The legacy of a Moroccan Jewish community is remembered at this little mouldering cemetery.

One of the last Jazz Age "Wonder Theaters" in New York City.

Along the Palisades skyline are the ruins of a large mansion built in 1911 and demolished in the 1930s.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

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

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A 16th-century Andalusian palace.

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

Week-long block party becomes a competition for the best decorated street.