The ghostly remains of an accidental sea.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

A heavenly experience, right here on Terra Firma.

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

Hollowed out cedar log tubs set in an ancient towering forest.

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

A beautiful 62-acre Catholic shrine and botanical garden.

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

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

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

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

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A crumbling hospital from the 1850s on Roosevelt Island.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A huge musical instrument played by the ocean.

Tiny horses tethered to antique rings are scattered around the city.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.