This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

An urban laboratory.

Dramatic river bend surrounds a natural red-rocked pedestal.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A spiritual vortex among the red rocks in Sedona.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

The cinder cone volcano with a less than complimentary name.

An homage to everyone's favorite prehistoric cartoon family.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

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

The bespectacled, cocktail-sipping pachyderm is a strange but fitting liquor store mascot.

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

This hidden stream beneath Indianapolis makes an appearance in the best-selling novel "Underground Airlines."

The largest earthwork effigy in the world.

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

An antique cemetery in New York, this land is home to any number of famed corpses.

This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

In the mid-19th century, an eight-sided house was the latest fad.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

World's largest herd of white deer populate a former U.S. Army depot.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

An abandoned asylum where patients have been forgotten but their possessions remain.

Pluto is still considered a planet in Ithaca, New York.