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

Where you can hail your favorite fictional commanders-in-chief.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The National Park Service’s best-kept secret with views that rival any in D.C.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

One of the last mosaic tile facades found in the city.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

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

A brass and marble scale model of the solar system embedded in the concrete.

Also known as the Founding Church of Scientology.

The first museum in the U.S. to address human rights issues in China.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

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

A celebrity from the late Cretaceous period.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

This fertility idol of questionable authenticity inspired an iconic Indiana Jones artifact.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

A wondrous old library overlooking the nation's capital.

A derelict bit of transportation infrastructure hidden in the woods.

A building shaped like the Army Corps of Engineers logo, because why not?

A hoard of sky catalogs, astrophysical journals, even the works of Galileo and Copernicus.

The most accurate timepiece in the world.