Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

For nearly a year, General Ulysses S. Grant was based here during the American Civil War.

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

The only recreation of William Shakespeare's indoor playhouse.

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

The last street in Pittsburgh that's paved with wood.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.