Spanning over 10,000 square miles, this ancient salt pan is one of the largest on the planet.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

When it comes to handsignals (and colonialism) rock always beats scissors.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Go take a picture with the inventor of the daguerreotype photographic process.

Washington's iconic carousel has a nice piece of Civil Rights history.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

South Africa's postal service began with a letter left in a boot beneath this tree.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

The U.S. Fish Commission’s effort to mass produce carp.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

The romance of early commercial flight still fills this Art Deco destination.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

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

Look closely and you’ll notice that the color changes a third of the way up the tower.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.