The world's longest known cave system.

Every last book in this bookstore is signed by the author.

Shaped like a big top tent, this memorial honors the victims of a terrible train wreck.

A stockpile of childhood lunch pails turned collectibles.

Booker T. Washington's home at the Tuskegee Institute was a gem of splendor.

The former home of the hard partying literary power couple is now one of the only museums devoted to their story.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

In the hometown of the Grand Ole Opry star is a larger-than-life memorial statue made entirely from chicken wire.

This Tennessee museum is dedicated to a tragic railroad hero who inspired the famous ballad that bears his name.

A bronze sculpture honors the 12 black students who attended the first integrated public high school in the segregated South.

The world's largest collection of porcelain "veilleuses-theiere," or night light teapots, includes four that belonged to Napoleon.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

A restored, one-room African-American schoolhouse in the diva's hometown now preserves the legacy of its most famous student.

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

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

Elvis's own personal tropical hideaway.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

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

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

Railroad came. People came. Railroad left. Town died.

All that's left of the quintessential "cabin in the woods."

Home of an evil witch famous within southern folklore.

This quirky museum has a collection of more than 15,000 bobblehead dolls.

According to the legend, this strikingly beautiful hill has miraculous healing powers.