A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

This abandoned Civil War fortress is slowly being swallowed by the waters of Lake Borgne.

The crumbling ruins of this southern American fort have survived storms, war, and cults.

$10,000 won in a poker game in 1884 allowed James Draughon to build this intriguing home.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

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

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

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

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

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

This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

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

Home to a full-scale replica of the Ezekiel Airship, an aircraft that allegedly flew in 1902—a year before the Wright brothers took to the skies over Kitty Hawk.

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

These boots are made for selfies.

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

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

The summer home of the largest colony of bats in the world.

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.