An overlooked memorial honoring the local Washington residents who died in World War I.

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

Decades before the scandal, this staircase on the river was a literal "water gate."

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

This statue of the "father of television" stands prominently in the United States Capitol.

The walls of the iconic dome are hollow and have a secret stairway.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Largest Roman Catholic church in North America.

The site of the climactic scene from the classic horror film is now a historic landmark.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

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

A wondrous old library overlooking the nation's capital.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

The first memorial dedicated solely to the Black troops who fought for the Union.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

Atop this media building, two hives containing more than 30,000 bees keep the surrounding area vibrant.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Look closely and you’ll notice that the color changes a third of the way up the tower.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

The Columbia Road Flower Market is now open every Sunday, rain or shine.

What happens when a sculptor has to find a way around a 100-year-old copyright.

A pixel art killer whale is frozen mid-leap in this Vancouver square.