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

Only known mainland rookery of the threatened Stellar sea lion.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

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

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

The magic's in the hole!

Antique automobiles, phonographs, organs, and farm equipment.

Birds with backpacks expedite film development for a rafting company on a remote Colorado river.

Neal Cassady may still have an open tab at one of Denver’s oldest watering holes.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

Colorado's only true geyser is hidden within the San Juan National Forest.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

This abandoned boat sits on a nude beach, is shaped like a UFO, and is covered in graffiti.

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

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

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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

An architect's childhood fantasy treehouse made real.

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

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

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

Canyon walls shrouded in ferns.