On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

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

An overlooked memorial honoring the local Washington residents who died in World War I.

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

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

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

Home to a vast and influential collection of Shakespeareana.

Decades before the scandal, this staircase on the river was a literal "water gate."

The most accurate timepiece in the world.

The oldest continuously operating fish market in the United States.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

The national park was once a plantation estate.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

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

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Art deco landmark on the outskirts of Washington, D.C.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The United States Capitol's former columns still stand.