The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

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

Home to items never before seen by the public.

The "lovely red Vega" of the legendary record-settling pilot.

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

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

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

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

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

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

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

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

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

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Illegal drag racing two stories beneath Chicago’s streets.

No one knows how many bodies are in this vault in a Chicago public park.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

To find the "unicorns of the deep" you've got to go downstairs.