The final residence of an educator, civil rights leader, and presidential advisor was also the first headquarters of the National Council of Negro Women.

One of the last mosaic tile facades found in the city.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

These unusual rooms on wheels are holdovers from the 1960s.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The Gaslamp District's oldest bar sports a urinal marked with a golden plaque that was allegedly used by Mick Jagger.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

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

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

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Elevated freight railway turned wildly successful urban park.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

On a wall in Cleveland, Ohio find the story of a highly connected fictional community of organisms that created remarkable, lasting structures.

An enormous factory from the late 1800s sits abandoned on Cleveland eastside.

Old car parts and assorted materials get turned into one man's mechanical treasures on the side streets of Cleveland.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

Known locally as "the giant head," this 14-foot LED sculpture has a photo booth in the neck where you can have a 3D picture taken and displayed.

In the Mound Hill Cemetery resides the final resting place of the world's tallest couple.