It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

This ghost town houses the remains of Alabama's old state capital.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

A Christian-themed amusement park and complex rocked by scandals.

The remains of a chapel created for convenience.

One-of-a-kind museum inside the first Boeing 747-400 ever made.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

A beautiful geyser under environmental threat.

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A bizarre house filled with an astounding array of collections.

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

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

This glass-stain Mary attracted thousands of pilgrims until her head was shattered by a vandal with a slingshot.