Inside the Library of Congress, about to visit the Magna Carta on loan from Lincoln Cathedral.
A coded letter by Sir Francis Walsingham in the Decoding the Renaissance cryptography exhibit at the Folger Shakespeare Library.
At one of the US Botanic Garden holiday displays...
...and at the train display.
Speaking of trains, here we are at the big Norwegian tree at Union Station.
And out in front of Union Station at dusk.