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

Once a slice of Cold War-era military history, this museum is finding its future in the stars.

Over a million artifacts fill this factory-turned-museum that explores the history of American windmill production.

A monument celebrating the Black soldiers of the 9th and 10th Cavalry.

Official museum, hall of fame, and repository of the Texas Rangers.

One part antique store, one part curiosities hodge-podge.

A grove of colossal man-made flowers built to collect the sun's rays.

This small stone building, the final work of a renowned artist, offers a peaceful environment with radiant, colorful glass windows .

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

This tiny, hurricane-resistant house in Galveston is one of the city's most notable architectural oddities.

This memorial and the seawall that it stands near are powerful symbols of the island’s resilience.

Where animatronic singing fish go to retire.

Yup, that's where the name came from.

Art blooms at this unique outdoor gallery along the banks of the Arkansas River.

The Old Mill shown in the opening credits of “Gone With the Wind” is actually fairly new, and was never a mill at all.

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

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

One of few surviving standpipe water towers in the U.S.

A museum and gift shop in a small Illinois town commemorates the work of E.C. Segar and the local figures on whom he based his characters.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

This life-size bronze statue remembers the tallest recorded human in his Illinois hometown.

This tiny historic jail along Route 66 is the perfect fit for exactly one criminal and their partner-in-crime.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.