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

This demon atop the Notre-Dame de Paris looks utterly bored.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

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

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

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

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

"We Seceded Where Others Failed."

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

This mesmerizing kinetic sculpture blossoms endlessly in the breeze.

Its columns were all carved from the same white oak tree.

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

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

The trials and tribulations of marking Poe's grave.

A wall of chewing gum moonlights as collective art.

A giant Troll lurks under one of Seattle's oldest bridges.

The magic's in the hole!

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.