Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

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

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

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

The unusual medical inventions of the man who gave the world Corn Flakes.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Largest magic museum in the United States with more than half a million pieces of memorabilia.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

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

Home to items never before seen by the public.

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

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

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

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

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

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

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

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

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

Frank Lloyd Wright died a year before construction on his largest public project even began.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

A strangely forgotten claimant to the much contested title of "Source of the Nile."