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

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

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

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

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

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

The most accurate timepiece in the world.

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 tiny piece of the Moon is embedded in this stained glass masterpiece.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

The fifth-longest natural arch in the world, and the longest outside China.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

FDR hoped to find a cure for polio in this Georgia town's warm springs.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

World's largest college campus includes a wildlife sanctuary and a former movie set on more than 28,000 acres.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

This historic oak tree has been around for over 300 years and might last for 300 more so long as it doesn't fall apart first.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

A man's home is his castle.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Tour the sci-fi-esque reality of governmental disease management.

The site of the Scopes Trial contains a small exhibit dedicated to the famous case.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.