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

A relic of roadside lore and perhaps the first of its kind in North America.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

This unusually circular centenarian barn became a Route 66 icon.

A building so large that it has its own weather.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

So many migrating birds roost on the bridge, it has a special summer speed limit.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

A fitting attraction for the corn capital of the world.

More than a century old, this trading post resides in the Navajo Nation.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

This 47-foot chile pepper sculpture welcomes Scoville heat unit obsessed tourists to the Big Chile Inn.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

This unique art installation used boiler tubes from a decommissioned power plant to resemble Antelope Canyon.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

A sharp bend in a dramatic river canyon cut through red rocks.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

A spiritual vortex among the red rocks in Sedona.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.