The curious underground history of keeping Paris clean.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

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

This 400-year-old tree is actually an immigrant from North America.

A surrealist timepiece by the artist of melting clocks.

An unusual number plate signifies the building's saucy past.

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

Site of a classic 19th-century physics experiment to prove the earth is rotating.

A town trapped in time - 1958 to be exact.

Lie in a hammock where George Washington stood.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This 19th-century clock has been restored to help withstand the harsh environment of its seaside home.

A very uncommon water tank standing in the middle of the grapevines in Bordeaux nearly a century after its construction.

This impressive chasm is one of the longest natural underground cavities in the world.

For those late-night mollusk cravings.

Lady Liberty's original designer installed a little clone in this French fountain.

Fighting the British and making game shows for over 150 years.

A sanctuary for wolves in a community which once trembled in fear of the murderous "Beast of Gévaudan."

France's high-tech, future-themed amusement park.

Claude Monet was baptized in this lavishly ornate Paris church.

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

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

Historic medieval fortified city in southwest France.