The longest continuous lava tube in Oregon.

The flow from this waterfall sometimes comes out of springs below its rim.

Secret Manor, a house full of legends, the least of which is the haunting of long-deceased ladies of pleasure.

At the edge of the high desert, California's second-largest natural lake is home to a unique subspecies of trout adapted to its alkaline waters.

This hiking/biking/horse trail along an old railroad grade features trestles, tunnels, and a roadless stretch through the scenic Susan River canyon.

A picturesque example of brute-force engineering conquering nature.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

It's not your typical library, memorial, or book store.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

This little valley along Highway 1 is engulfed by thousands of lilies during the spring season.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

Haunting and beautiful trees, doomed to die.

The angel of death appears to weep black tears at this grave marker.

California's longest-running tourist attraction is a stump.

Its dark depths conceal millions of rare, delicate crystal formations.

A popular tourist cave with a dark past.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

Elaborate tile work in this railway station tells the story of Portugal.

Monumental sculptures of Patrick Amiot, constructed from debris, detritus, and determination.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

Spain's stunning solar energy plant.

This small chapel is built of human bones and decorated with a golden skeleton.