The largest known Ancient Egyptian obelisk.

The once great capital of Egypt now crumbles forward as evocative ruins.

An endless sea of white conical domes.

Ozymandias’ time-keeping temple.

An ancient city exhumed from the depths of the ocean.

The massive cave church of Cairo's Zabbaleen community is one of the largest Christian churches in the Middle East.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

One of the greatest maze designer’s greatest mazes.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The oldest stone house in Paris was built by its most famous alchemist.

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

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

The infamous Boston Mob ran rackets from an office here in the 1970s.

This historic Boston building has gone from personal estate to porn theater and back again.