Natural sonic phenomenon comes with a grisly legend of murder and blood.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

This is one really big nut.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

A cave's rare beauty held a cavernous secret hidden underground.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

Legends surround this jagged rock formation in the New Mexico desert.

A multi-storied adobe complex has been inhabited for more than a thousand years.

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

These aggressively sustainable art homes look like something out of 1970's science fiction.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

The lowest point in South Dakota and the source of the Minnesota River.

This sculpture gallery is home to magnificent beasts made of scrap metal and found objects.

Known as "The Hill of the Little Devils."

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

A fitting attraction for the corn capital of the world.