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

The glowing blue Nymphaeum of Emperor Tiberius.

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

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The first of Lancaster's "rural cemeteries."

Memorializing an American tragedy of massive proportions.

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

Steepest flood safety railway in the entire world.

A diorama of the Civil War, fought by cats.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

World's first "penitentiary," meant to be humane, drove men insane.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The final resting place of New Orleans' most famous voodoo priestess.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

Plymouth's huge yet little-known memorial to the Pilgrims.

The final resting place of a suffragist author.

This wooly sculpture supposedly marks the birthplace of a famous nursery rhyme, or not.

It took 275 years and four burials to finally put the Mayflower’s most famous passenger to rest.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.