This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

Mai Tais and Navy Grog served up in one of the original tiki bars.

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

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

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

An offbeat angle on the ocean viewed through an antiquated lens.

Only hotel where you can legally launder money.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

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

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

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

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

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

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

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

The United States Capitol's former columns still stand.

There’s a special club house at the top for the bell ringers.

At 207 feet, one of the world's longest continuous escalators.