The maritime museum that boasts the largest nautical library in the western hemisphere.

A "hospital" where people went to be quarantined, die, and be buried in the yard.

This historic mansion was built as a symbol of love between a husband and wife.

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

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

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

At 207 feet, one of the world's longest continuous escalators.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

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