A tall smoke stack and boarded-up buildings are all that's left of the pioneering plant.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

Three hundred years of preserved Spanish colonial history in San Antonio.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

One of the highest points in Bexar county offers birdseye views of San Antonio and a four-story stone tower.

With the touch of a button, you can read a randomly selected short story.

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

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

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

Quite simply the largest tree in the world (by volume).

Four hundred granite steps were built into this massive rock by the National Park Service.

Malibu's first beach home features an astonishing trove of ceramic tiles.

A second generation sun-powered marvel lights up the night.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

Thousands of turbines whir at at the origin of North American wind power.

An Old West film set seen in countless TV shows and movies is open for the public to explore.

A bomb shelter and some fireplaces are all that remain of the house Fred Roberts tried so hard to keep standing.

The stone walls of a home built to withstand a California wildfire still stand after more than a century.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.