The first full-scale tunnel built in America is short but scenic.

Live long and prosper in Tennessee.

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

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

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

Mile-long cave system near Great Smoky Mountains.

Walk the whole Mississippi River!

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

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

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

This family driveway also serves as the highest point in Illinois.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Visit this playground of waterfalls, caves and sinkholes.

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

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

One North Dakota man's vast collection of rare rocks, polished orbs, and geological wonders.

A true roadside icon standing on the same plains that the herds once roamed.

A monument to the center of the North American continent may be off by a few miles.

Three legendary, living albino buffalo roaming their pastures for all to see.

The remnants of an early American attempt at missile defense.

One man's quest to save his town with a trail of record-breaking sculptures.