A popular rock that acted as a waymarker for American pioneers.

This massive redwood tree has a hole in the base big enough to drive through.

An optical illusion found amid a logged redwood forest.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

Come for the speed, leave in love with the desert.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

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

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

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

This museum glorifies the humble potato.

This natural marble cave is one of only five national monuments in Oregon.

High in the Rockies the third largest statue in the U.S. opens her welcoming arms, and lights up the night sky.

Historic site where Native American hunters once trapped and killed buffalo.

A tourist attraction founded around a slumping cabin.

The only road through the heart of Glacier National Park.

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

This extinct shield volcano is the lightning rod of the Cascades.

Only known mainland rookery of the threatened Stellar sea lion.