Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The world's second largest rocking chair is found on Route 66 in Cuba... Missouri.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

An architect's childhood fantasy treehouse made real.

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

A cemetery housing wild west legends in South Dakota.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

This elaborate towering structure was once famed for its revolutionary height.

An outlandish shoe shaped house built by an eccentric millionaire.

A museum packed with instruments, lyrics, and other mementos of the American folk icon.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

These massive mitts are made of 30 tons of devotional bronze.

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

The only road through the heart of Glacier National Park.

An emporium for the weird, creepy, rare, and just plain gross.

Elvis's own personal tropical hideaway.

The world's largest rotating world.

Two massive rock outcroppings on the Oregon coastline.

This striking art museum holds an amazing series of curiosity cabinets.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Live long and prosper in Tennessee.

Nature's biggest mammal swims in landlocked Oklahoma.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.