The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Alexander Hamilton’s creation caused quite a bit of controversy.

The world's last remaining store of its kind.

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

Only known mainland rookery of the threatened Stellar sea lion.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

A massive sea stack famous for its appearance in The Goonies.

A Roman-style column in Oregon hides a spiral staircase inside.

100-year-old shipwreck you can walk up to at low tide.

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

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Post office plaque commemorates local resistance to a cult invasion.

An out-of-the-way state park in Oregon that features both a picturesque waterfall and the ruins of a hydropower plant.

Members of the Confederated Tribes of Warm Springs still net migrating salmon in the traditional way at this cataract on the Deschutes River.

This maintained cabin is where Josie Morris, an occasional associate of Butch Cassidy, lived out the last 50 years of her life by herself.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

An entire town preserved as a historic landmark.

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

Home to the deepest rift anywhere on Earth.