Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The span is crooked and made from two older recycled bridges.

Washington's iconic carousel has a nice piece of Civil Rights history.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

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

A historic ruin just 20 feet away from a busy highway onramp.

This lovely pocket park is one of the most under appreciated in D.C.

Obscure Freemasons still live in D.C.’s largest private residence.

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

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

The oldest continuously operating fish market in the United States.

The house where John Wilkes Booth conspired with his co-conspirators.

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

There’s a hidden military meme engraved on the World War II Memorial.

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

This leafy estate is worth $18 million and is so grand it has two mailing addresses.

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

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

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

A unique market that brings together various goods and cultures.

Every Sunday, this Thai temple in Berkeley serves a backyard brunch.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

Most prolific publishing house in the 1600s open to the public.