Prehistoric animals decorate this popular outdoor park.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

An underground wonderland in Iowa.

A crumbling wizard is one of the final reminders of a roadside Middle Earth.

An optical illusion found amid a logged redwood forest.

The mysterious round rocks of Schooner Gulch.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

This abandoned boat was left in place thanks to its rotting beauty.

Folk art crafted from discarded vegetable crates.

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

Celebrate Earth Day with a menagerie of vibrant, artistic animal costumes.

A giant roadside black bird marks the location of this eclectic local mall.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

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

On East Burnside, a 24-hour vending machine distributes world-class pastries.

Definitely not a clown bar.

No two pieces are exactly the same at Portland's hippo-themed hardware store.

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

An emporium for the weird, creepy, rare, and just plain gross.

Is this the most Portland place ever?

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

Delightful disarray of found objects and clutter.

Entering this curiosity shop is like stepping into a mad scientist's lab.