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

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

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

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

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This 700-year-old street food market features baby octopus and soy donuts.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

An extensive collection of ancient Egyptian artifacts and mummies.

The headquarters of a secretive order is also a beautifully-designed park.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

A strange house built only at night, with rumored mystic inspiration.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.