A historic Civil War estate-turned-museum looks back on the Confederate States of America.

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

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

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

A 30-foot-tall cement chair pays tribute to a historic design and a local industry.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

Could it have picked a better place to land?

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

The Old Man of the Mountain’s less-famous, but still beloved little brother is said to resemble a leader of the Abenaki tribe.

This nature mural exists to protect the surrounding environment and its own canvas from destruction.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

This replica of the Greek structure is in the heart of Nashville.

The highest bridge in America was built for an almost unnervingly small amount of money.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

This log cabin gallery is one man's gnarly, hand-carved tribute to his favorite trees.

A giant lumpy candle serves as a beacon for this highly scented pit stop.

In northern Ohio, the glorious past of America's trains is on full display.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Also known as the Cathedral of the Plains, this church holds the distinction of being one of the "8 Wonders of Kansas."