A controversial memorial at the place where Captain Cook met his violent end.

Watch the newest land on the planet form before your eyes.

The spot where the namesake of the Douglas fir met his mysterious end on a Hawaiian volcano.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This legendary urban waterfall creates a dazzling display of rainbows.

These ancient sacred grounds granted amnesty to those who managed to reach them.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This black shoreline is made up of exploded lava particles.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

The unusual burial monument of Arizona's first governor.

A geological mystery on Camelback Mountain.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

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

A spiritual vortex among the red rocks in Sedona.

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

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

The only house in Oregon designed by the famous architect, Frank Lloyd Wright.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

A public fountain that spouts "health water" from a nearby spring.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.