This historic mansion was built as a symbol of love between a husband and wife.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The secret city built by the Manhattan Project.

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

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.

Three hundred years of preserved Spanish colonial history in San Antonio.

Exact replica of the ancient monument, but much, much lighter.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.