The tallest waterfall in West Virginia.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

Honoring combatants from Portsmouth who served in Cuba and the Philippines during the Spanish-American War.

This taxidermy horse was a Civil War hero.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

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

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

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The most decorated dog of World War I is preserved in the Smithsonian.

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

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

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.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

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

This ancient monument has been dissembled and put back together at least twice.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

A bronze statue commemorating his royal meowjesty, Toulouse.

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

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The palatial McDonald's that inspired Wesley Willis.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.