This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

The largest island on the great salt lake is home to curious creatures and strange stories.

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

The fifth-longest natural arch in the world, and the longest outside China.

Where unreadable addresses are read, 24 hours a day, seven days a week.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

This chestnut box will not be opened until the country music legend's 100th birthday in 2046.

An ode to "The Queen of Appalachia."

Elvis's own personal tropical hideaway.

Live long and prosper in Tennessee.

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

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

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

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

The secret city built by the Manhattan Project.

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

One of the first intercontinental ballistic missile sites in the United States.

One devoted couple has donated multiple recreations of Michelangelo's sculptures to this South Dakota town.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

Every president in history is immortalized in bronze in downtown Rapid City.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.