This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

Eighty million natural history specimens call this gargantuan museum home.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Pop culture has helped to keep this iconic British building from being destroyed.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The White House Situation Room was taken apart in 2006 and shipped to the Ronald Reagan Presidential Library.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

This giant temperature attraction created some giant electric bills.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Rusty industrial city full of oxidized distillation towers.

Oldest building in California still in use.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

This massive redwood tree has a hole in the base big enough to drive through.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

Quite simply the largest tree in the world (by volume).

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

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.