Washington, D.C.
USNO Master Clock
The most accurate timepiece in the world.
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Washington, D.C.
The most accurate timepiece in the world.
Washington, D.C.
Decades before the scandal, this staircase on the river was a literal "water gate."
Washington, D.C.
Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.
Washington, D.C.
D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.
Washington, D.C.
Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.
Washington, D.C.
A rotating cast of guys and dolls in front of a Washington, D.C. building.
Washington, D.C.
The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.
Washington, D.C.
There's a crumbling old mansion inside the Smithsonian National Zoo.
Washington, D.C.
An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.
Washington, D.C.
A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.
Washington, D.C.
Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.
Washington, D.C.
The house where John Wilkes Booth conspired with his co-conspirators.
Washington, D.C.
An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.
Washington, D.C.
People escaping slavery may have hidden inside a corpse vault.
Washington, D.C.
A Spiritualist house of worship where believers communicate with the dead in the spirit world.
Washington, D.C.
This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.
Washington, D.C.
A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.
Washington, D.C.
This leafy estate is worth $18 million and is so grand it has two mailing addresses.
Washington, D.C.
The most decorated dog of World War I is preserved in the Smithsonian.
Washington, D.C.
A nostalgic bibliographic gem.
Washington, D.C.
A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.
Washington, D.C.
A derelict bit of transportation infrastructure hidden in the woods.
Washington, D.C.
A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.
Washington, D.C.
Fittingly, America's museum of architecture is itself a magnificently designed old building.