The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

Only known mainland rookery of the threatened Stellar sea lion.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

"Only the devil could play golf here."

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Quite simply the largest tree in the world (by volume).

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

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

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

See massive fossils that are over 200 million years old in northeastern Arizona.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

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

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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

When ecosystems collide in the arid Southwest.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

This recently restored timepiece has stood all around Kansas City.

Community bookshelf of 25-foot-tall book spines.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This failed condo development was reborn as a street art hub.