This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

This sky-high radio mast is formerly the tallest man-made structure in the world.

Roaming bison and a spectacular view at the highest point in Nebraska.

An experimental, automotive replica of Stonehenge.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

Belly up to the bar in Cowtown, don't forget to buy some boots.

A Texas museum filled with Broncos and Betties.

A modernist landscape of water and sci-fi concrete.

Abandoned silver mine strewn with wrecked and twisted structures.

When ecosystems collide in the arid Southwest.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

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

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

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

A clear blue swimming hole with hidden caves, still unexplored.

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

The location along the shores of the Great Salt Lake of what was once called, "The Coney Island of the West", now sits barren due to arson and time.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

This giant temperature attraction created some giant electric bills.