Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

Moonbows over Kentucky.

The world's longest known cave system.

Spectacular views await visitors to this lake.

The highest point in Montana is as rugged and singular as the state itself.

High in the Rockies the third largest statue in the U.S. opens her welcoming arms, and lights up the night sky.

A rapidly disappearing glacier filled with extinct grasshoppers, perfectly preserved in the ice.

The only road through the heart of Glacier National Park.

New fungal and bacterial species call this deadly lake home.

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

After 97 years of constant vigilance from the dome of the Texas State Capitol, the original Goddess of Liberty retired to a life of climate-controlled leisure.

This massive oak tree has ties to the first native tribes of the region and the founders of Texas.

A small island hides in plain sight on Austin's Lady Bird Lake.

A free, canine-friendly alternative watering hole near the more famous Barton Springs.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The first declared National Monument in the United States.

Seth Bullock, the sheriff of Deadwood, built this town immediately after Teddy Roosevelt’s death in 1919.

A fitting attraction for the corn capital of the world.

A smoke stack so large, the Washington Monument could fit inside!

An alternate history park where the Union Army loses the war... to dinosaurs.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.