Please don’t anchor your boat onto the Department of Defense’s underwater data cables.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

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

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

A diminutive memorial marks the site of a successful assassination by a right-wing death squad in America's capital.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

Right next to departures—how convenient!

One of the greatest boxers and humanitarians to ever live chose his hometown as his final resting place.

A life-sized memorial to Harry L. Collins, the official corporate magician of Frito-Lay.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

This hidden jockey “walk of fame” celebrates the winning riders of the Kentucky Derby.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

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

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

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

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

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

Home to items never before seen by the public.

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

The oldest continuously operating fish market in the United States.

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

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."