The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

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

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

The oldest continuously operating fish market in the United States.

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

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

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

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

The only recreation of William Shakespeare's indoor playhouse.

An alternate history park where the Union Army loses the war... to dinosaurs.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

One street divides a single town that stands in two U.S. states.

An ode to "The Queen of Appalachia."

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Step back in time on this preserved 1800s farm.

Step past the gas pumps and into a fine French bistro.

Where school buses go to die and be reborn as whimsical works of art.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

Every year, the colorful murals of Montreal get a complete makeover.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.