Less a museum than a bizarre fantasy world created by artists and engineers.

Walk through the history of American pop culture.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

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

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

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Home to a vast and influential collection of Shakespeareana.

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

The span is crooked and made from two older recycled bridges.

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

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

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

A celebrity from the late Cretaceous period.

The oldest continuously operating fish market in the United States.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

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

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

Largest Roman Catholic church in North America.

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