A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

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

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Decades before the scandal, this staircase on the river was a literal "water gate."

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

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

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

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

"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!”

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

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

Daily lunch spot for many of Washington, D.C.'s cab drivers.

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

Where the U.S. government kept its actual treasure, before Fort Knox.

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

A much-maligned monument to teetotalism.

Art deco landmark on the outskirts of Washington, D.C.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

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

A computer bug so primitive it was an actual insect.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.