The celebrated eyesore created by starry-eyed sweethearts.

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

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

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

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

These tenacious 14th-century towers defied demolition and are now a fairytale vacation rental.

Take a walk in a recreation of ancient Rome.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

This giant roadside fruit is home to an array of apple-based treats.

This historical Netherlands fortress still bears the marks of its single siege.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

The world's largest moose statue is located (where else?) in Canada.

The only town in the world with two exclamation points in its name.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

This engineering marvel is the longest bridge in Canada and one of the longest spans in the world.

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

Rusty red sands line the shores of this Canadian Province.

Canada's subterranean Cold War museum has doubled as a movie set.

This defunct Champlain Oil service station harkens back to the early days of automobiles.