Each of these hand-painted wooden boxes, which date to between the 16th and 19th centuries, contains a genuine human skull.

Tens of thousands of ancient rock carvings hidden in the heart of a French national park.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

Once believed to be a sacred Roman legionary symbol, this bronze figure inspired the 1954 novel 'The Eagle of the Ninth.'

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

A hidey-hole sandwiched between cellphone, DVD, and jewelry stores features Tibetan delights.

Feral cats keeping the rodent population at bay all across Greenpoint waterfront.

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

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The taxidermied remains of a once-great parrot.

Historic cuisine meets fine dining in a hotel-restaurant overlooking Hyde Park.

The remains of the great moral philosopher reside in a university in London.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Two plaques commemorate the site of Shakespeare's first theatre.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

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