These abandoned waterworks are crumbling into the Potomac River.

The record holder for the world’s largest peach.

A haunting tribute to pioneering photographer Clover Adams.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

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

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

The fairy tale castle of the "fairy-tale king."

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

This poor little statue is the most vandalized memorial in Washington.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

A Spiritualist house of worship where believers communicate with the dead in the spirit world.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

People escaping slavery may have hidden inside a corpse vault.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

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

At 207 feet, one of the world's longest continuous escalators.

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

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

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.

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

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

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