A Roman-style column in Oregon hides a spiral staircase inside.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

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

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Home to the deepest rift anywhere on Earth.

A colorful collection of scavenged glass bells decorates this Canadian ranch.