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

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

John Wayne, Ronald Reagan, and other Hollywood actors have resided in this picturesque Route 66 hotel.

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

This small museum is dedicated to the study of coprolites, or fossilized poop.

A cosmic pit stop just beyond the notorious Area 51.

This oversized flute-playing Ancestral Puebloan deity is also a landmark of Southwestern kitsch.

This comprehensive collection features Native American artifacts dating back centuries.

This Rodin sculpture in Cleveland bears the lasting marks of a 1970 bombing.

This massive redwood tree has a drive-thru tunnel carved out of its trunk.

This Moab institution functions as both a rock store and a small natural history museum.

This historic bridge connects Whidbey Island to Fidalgo Island across whirlpool-filled waters.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

An excursion train traverses a picturesque red-rock canyon along the Verde River.

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

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

Engraved in stone here are the signatures of everyone who signed the Declaration of Independence.

This bird-shaped rock formation defies gravity, time, and classification.

Larger-than-life cut-out murals of James Dean and Elizabeth Taylor, dedicated to their 1956 film ‘Giant.’

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

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

This Native American settlement dates back to the Pueblo II period.

A memorial to the most decisive Native American victory of the Plains Indian War.