In this Globe Trekker special, Zay Harding, Sami Sabiti, Holly Morris, Justine Shapiro and Ian Wright explore the extraordinary history of America's spectacular Wild West. Sami starts the journey by following Lewis & Clark's 3700-mile journey of exploration from 1804, Zay visits the location of the most famous siege in the history of the Wild West - the Alamo, Justine visits the site of the first discovery of the California Gold Rush, Holly joins the annual re-ride of the 2, 000-mile Pony Express route, and Ian heads to the Little Bighorn battlefield in Montana, the site of Custer's Last Stand in 1876.