These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

The narrowest street in Paris.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

This emotive sculpture was originally created for the 1878 World's Fair.

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

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

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

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

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

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.

The history of radiation is on safe display at the foot of a radiation science laboratory.

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

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

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

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

This massive library holds what was once the largest book collection in the world.

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

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

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

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

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.