Right next to departures—how convenient!

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

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

This one-room cabin where the young colonel slept during the French and Indian War.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

Go take a picture with the inventor of the daguerreotype photographic process.

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

Memorializing an American tragedy of massive proportions.

An abandoned stretch of highway, deteriorating next to the operational one.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

A line of blue paint marks the route of the inaugural parade.

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

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

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

She stares out across six lanes of traffic, clutching a musket and infant with determination.

A painfully obvious spy house sits right across the street from the Russian Embassy.