Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

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

Two massive rock outcroppings on the Oregon coastline.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

Only known mainland rookery of the threatened Stellar sea lion.

A wall of chewing gum moonlights as collective art.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A fitting attraction for the corn capital of the world.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Lone survivor from Custer's Last Stand forever preserved.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This massive redwood tree has a hole in the base big enough to drive through.