A winding path built in secret on the edge of the continent.

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

A beautiful geyser under environmental threat.

Elevated freight railway turned wildly successful urban park.

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

The magic's in the hole!

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

A mysterious castle built as a monument to lost love.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Hollowed out cedar log tubs set in an ancient towering forest.

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

A store that sells all manner of bones, insects, and animal curiosities.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A hotel and restaurant serving as the mecca of kitsch.

A trash dump made beautiful by nature's power.

A walk through the historic city center, under the streets of Seattle.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

Towering basalt columns, a creation of fire and ice.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Visible below the waves are memorials to the city's Gold Rush dead.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.