Elvis's own personal tropical hideaway.

A delightful park featuring homemade scale replicas of dinosaurs, tucked away in the Tennessee mountains.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

Walk the whole Mississippi River!

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Home to drunken tower-climbing goats... seriously.

The secret city built by the Manhattan Project.

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

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

More than five miles of underground passageways.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Visit this playground of waterfalls, caves and sinkholes.

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

Enormous lake at the bottom of a unique cave system.

The second-largest ceremonial mound in the United States is an artificial hill that is loosely shaped like a pentagon.

Built following the War of 1812, this fort has withstood hurricanes for centuries.

The body of an unidentified woman, visible through a glass coffin, was discovered by accident.

William Faulkner kept his beloved estate wild and untamed.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

Florida’s half-sized replica of the Vietnam Veterans Wall.

The time thousands of bags of chips washed ashore in the Outer Banks is memorialized in a local museum.