A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

A mailbox that saved a nature reserve.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

The world's oldest surviving music hall was also once a freakshow.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A forgotten sea village stands silent after hurricanes deemed it obsolete.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

Like Mardi Gras, only everyone's a pirate.

Art museum based around the collections accumulated over 58 years by one eccentric thrift store owner.