Old Las Vegas Mormon Fort, the first permanent, non-native settlement in the Las Vegas Valley, features the historic remains of an adobe fort built by Mormon missionaries along a spring-fed creek in 1855. The creek, the only free-flowing water for miles around, provided irrigation for fields and orchards and the 150 square foot outpost served as a way station for travelers. Today the park is located in what is now Downtown Las Vegas. In addition to the fort, which contains a multitude of historic artifacts, a Visitor Center contains exhibits and photos that illustrate the history of the site.