A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

An abandoned town is hidden in Great Smoky Mountains National Park.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

Dedicated to the history of the health sciences.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

This elaborate towering structure was once famed for its revolutionary height.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The abandoned coal loading dock is a canvas for unsanctioned art.

World's first "penitentiary," meant to be humane, drove men insane.

A Roman-style column in Oregon hides a spiral staircase inside.

A vertically floating hemlock controls the waves and weather at Crater Lake.

A massive sea stack famous for its appearance in The Goonies.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

One of Cincinnati's greatest fighters once trained at a now defunct gym in this Over-The-Rhine neighborhood.

One of the few beardless depictions of Lincoln, George Grey Barnard's 1917 was denounced by many—including Lincoln's own son.