1920's mining camp and environmental education center is serving to protect the surrounding forest, one of the last of its kind in the Pacific Northwest.

Formerly secret, precariously perched boulders.

A tourist attraction founded around a slumping cabin.

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

Treehouse motel and treehouse-building school.

A chance to sleep among the firs and pines of the Oregon forest.

A collection of colorful dinosaurs hidden in an actual rainforest.

Sleep beneath the big screen at this old-school movie theater.

A whimsical village of unique treehouses resides in a Washington forest.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

A fine, large-aperture telescope available for public use.

An institution that preserves the history of institutionalization.

The remains of a former logging boom town, crumbled away in the forest.

This graveyard is the eternal home of many brave pioneers who settled the Great Northwest.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

Inmates dig the graves at the largest prison cemetery in the U.S., the final resting place of both cowboys and Indians.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

A medieval castle in the middle of rural Texas.

Official museum, hall of fame, and repository of the Texas Rangers.

The world's largest squirrel statue clutches a pecan bigger than your head.

A high-octane shrine to the greatest Texans who ever lived.

A tribute to the "toughest woman on the Texas frontier," who survived a famous battle and five husbands.

A free, canine-friendly alternative watering hole near the more famous Barton Springs.