A vertically floating hemlock controls the waves and weather at Crater Lake.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

Long-secret natural history museum, featuring the skull of a "Terror Bird."

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

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

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

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

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

The world's longest known cave system.

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

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A museum dedicated to the history and exploration of both popular music and science fiction.

A heavenly experience, right here on Terra Firma.

A beautiful geyser under environmental threat.

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

The seamy, underground secrets of Portland's criminal past.

Famously misunderstood wonder of the ancient world

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Tucked in the back of this amazing antique store is an important piece of medical history.