The mayor made the declaration in 2004.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Perhaps the most scandalous statue of America's first president.

A computer bug so primitive it was an actual insect.

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

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

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

This grand gothic brewery has been pumping out suds for over a hundred years.

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

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

A rotating cast of guys and dolls in front of a Washington, D.C. building.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.