This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

This ancient theater was once the home of fierce gladiatorial battles.

The Nobel-Prize-winning author of The Stranger is buried beneath a simple gravestone in a sleepy French village.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

Paris' linguistic guide to the international language of, yes, love.

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

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

Saintly bones pressed into a wax effigy of a Catholic superstar.

The narrowest street in Paris.

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

The video game-themed street art first popped up in the French city.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

This fertility idol of questionable authenticity inspired an iconic Indiana Jones artifact.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

Once home to the largest photo service in the United States.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.