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

The United States Capitol's former columns still stand.

Impressive sink holes fill this untouched old-growth forest in the Bahamas.

A vast necropolis where you'll find the elaborate mausoleums of Argentinian tango stars.

In this pristine Ecuadorian hippie town, residents remain active well into their eighties and nineties.

One of the best places to see feral Colonial Spanish Mustangs in the United States.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

A fascinating little museum all about the rich history of Peru’s famous plant.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

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

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

One tiny triangular park commemorates the victims of a yellow fever epidemic—many of whom are buried right below the grass.

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

A former major munitions plant that has been converted into a sprawling art space.

America's first federal monument.

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

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

The only recreation of William Shakespeare's indoor playhouse.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.