This historic building provides a powerful glimpse into the lives of Japanese Americans forced to relocate during World War II.

A wall of chewing gum moonlights as collective art.

A terrific purveyor of natural history objects and curios.

There must be a pun in this haystack somewhere...

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

There are owls with glowing eyes in Herald Square.

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

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

Protecting the dead from opportunistic body snatchers.

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

Pompeii's less famous neighbor is still revealing her secrets.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

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

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

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

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

These "anatomical machines" are only one of the many strange items in this Italian crypt.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Architectural monsters are devouring this palace's every door and window.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Plaques on its facade commemorate the Tiber's most destructive deluges.