Visit the secret grave of a legendary privateer who faked his own death.

This North Carolina store preserves a historic moment in America's movement for racial equality.

This shrine commemorates the site of the first known Catholic mass in the United States.

The first documented commercial gold find in the United States.

A building so large that it has its own weather.

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

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

A sprawling maze of used books piled from floor to ceiling.

After an Illinois church was struck by lightning and burned down, Frank Lloyd Wright designed this replacement.

The first home and studio that belonged to the famous architect.

North Carolina's only restored fort from the French and Indian War.

The final home of the most famous horse of the American Civil War.

This tower was once used to create ammunition for early settlers.

The oddly shaped, steam-spewing building is now an art studio and gallery.

The hide of Stonewall Jackson's equine sidekick is on display not far from where the ashes of his bones are buried.

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

Used as a military post in three different engagements, this fort has remained incomplete and unfired upon for nearly 200 years.

It's a pretty creepy lock-up.

The site of Martin Luther King Jr.'s arrest as he attempted to have lunch.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

One of the oldest, tallest, and most haunted lighthouses in America.

Built around 1723, this is the oldest surviving home in the U.S.'s oldest colonial city.

This replica of a 16th-century French settlement memorializes one of the earliest attempts at a European settlement in North America.