This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

An ancient capital city that dates back 3,000 years and harbors many surprises.

This monument is a stark reminder of the horrors of the Zanzibar slave trade.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

This replica of the Greek structure is in the heart of Nashville.

Looming communist pillar with a Czech twist.

This former quarry is now a picturesque gorge that hides a sunken lake.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Macabre astrological automaton clock dating to the late 1400s.

A church of bones, decorated with 40,000 human skeletons.

Get past the gatekeeper's apartment and enter an elaborate hoax of a restaurant with a Masonic feel.

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

This cheeky restaurant has a serious devotion to lard sculptures.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

A wooden theatre that remains the heart of a charming Victorian-era New Jersey enclave.

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

Step inside Lucy, the world's largest "elephant."

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

A beautiful final resting place for some of the noteworthy deceased.