The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

An ode to "The Queen of Appalachia."

Live long and prosper in Tennessee.

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

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

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

Buttermilk biscuits so nice, you'll say “yay” twice.

Feast on award-winning birria tacos from a food truck inside this neon robo-tiki bar.

East Nashville's oldest dive bar will bring you back to life with animal-style bar fare.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

The site of the one of the most deadly train wrecks in American history.

When Motown musicians came to Nashville in the 1960s they stayed at this historic record-pressing company because hotels wouldn't host them.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

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

Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

Ice cream stand, snack bar, and time capsule of milk conveyance.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

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

An enormous, inside-out glass globe built in 1935.

The Boston square dedicated to the dark poet who was born nearby.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.