World's only nuclear reactor operated by liberal arts undergraduates.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

"All Mountains - All The Time."

An old-timey wax exhibition campily depicting New Orleans legends and scandals.

A mysterious find dredged from Louisiana waters.

A world-class observatory in the California desert.

This gold-winged spire celebrates the first true flight around the world.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

A showcase of canine neckwear spanning five centuries of doggie fashion and function.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

Welded sphere dropped from space.

A piece of outsider public art accompanied by a strange urban legend.

Only intact Ichthyosaur skeleton in the United States.

Center filled with hands-on displays served as a tribute to several astronauts with connections to the state.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Medieval torture techniques with a modern conscience.

A real flying saucer, contracted by the U.S. Air Force.

A museum dedicated to the history and exploration of both popular music and science fiction.

A volcanic fissure over two miles long and up to 70 feet deep.

A Roman-style column in Oregon hides a spiral staircase inside.

The short-lived history of a new republic and British control in West Florida.

A nuclear bunker built to shelter the politicians and important people of Scotland in case of nuclear attack.

This massive glowering Lenin head gazes out over eastern Siberia.

Suburban observatory was personal lab of the father of modern astrophysics.