This labyrinthine resting place of Black American leaders has been reclaimed by nature.

A genuine Tudor manor transported piece by piece from England.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

An important landmark in the history of algebraic logic.

This tall stone wall with no door and ill-matched windows was built centuries ago, and used as a shelter for domesticated pigeons.

The ruins of a sixth-century monastery sit on the banks of the River Shannon.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

This sprawling farm was once a Cold War-era hideaway for the nation's top diplomats.

One of the last active volcanoes on the Eastern seaboard.

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