An extra-wide chair built to accommodate the former president's big behind.

This historic park site contains the last remnants of a once bustling canal system.

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

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

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

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

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

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

There’s a hidden military meme engraved on the World War II Memorial.

Home to items never before seen by the public.

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

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

A castle built for love, and abandoned due to heartbreak.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Mysterious stone tower featured in many alternative histories of the New World.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

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

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

America's only nuclear missile silo open to the public.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

The world's largest military aircraft cemetery.