Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

A subterranean shelter remains intact under a busy Paris railway station.

Indents in the pavement are all that remain from a grisly death machine in Paris.

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

A prized globe signed by Amelia Earhart and Charles Lindbergh sits in the Brooklyn office of the American Geographical Society.

This impressive mansion in Vinegar Hill has some mysterious details in its architecture.

Walk into the 19th century without leaving Brooklyn.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

One of the city’s oldest watering holes was originally the home of a famous James Brown (not that one).

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

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

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

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

This gorgeous space is England's largest independent library outside of London.

A student driver's nightmare.