Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

A haunting collection of the vanished and disappearing natural world.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A fascinating insight into daily life in the Eastern Bloc.

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

One of the most elaborate displays of Jellyfish is on display at the aquarium.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."

More than 700 species live within this murky marvel of a swamp on California's coast.

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

An expansive and intricately restored mansion remains from over a century ago--and so do its ghosts.

The longest covered bridge west of the Mississippi River.

The self-made house sculpture of an outsider artist who named himself "Chief Rolling Thunder."

This giant slab of driftwood marks the beginning of the Winnemucca to the Sea Highway.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.