Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

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

The "lovely red Vega" of the legendary record-settling pilot.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

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

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

A celebrity from the late Cretaceous period.

A nostalgic bibliographic gem.

The national park was once a plantation estate.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

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

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The site of the climactic scene from the classic horror film is now a historic landmark.

The location where the American Revolution ended.

These unusual rooms on wheels are holdovers from the 1960s.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

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

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

This cannonball stands as a reminder of the final act of a fleeting governor amidst a revolution.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

This museum explores the grim reality of life in the earliest British colonies in America.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.