This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

The "Seinfeld" diner.

Visit the monolithic tomb of America's most famous general.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A wondrous old library overlooking the nation's capital.

A portal into the bricked up canal that runs through the heart of Washington D.C.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

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

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

The National Park Service’s best-kept secret with views that rival any in D.C.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

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

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

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

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

A historic arena where the Beatles played their first concert in the U.S.