The world's first time capsule lies behind a welded steel door in Atlanta.

3/4-scale model of the White House in Atlanta, Georgia.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

This beautiful 16th-century necropolis marks an astonishing feat in heritage conservation.

This demon atop the Notre-Dame de Paris looks utterly bored.

Inside a former cabaret, seven floors of erotic art.

This bridge was constructed from the rubble of the infamous Bastille.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Olfactory delights in San Francisco's Botanical Gardens.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

World's smallest skyscraper, the product of a remarkable con.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

Austin’s nonprofit-run graffiti park where street art is meant to be painted over.

Conflicting markers on its floor tell a tale of two city centers in San Antonio.