Interstate 55 is the main highway connecting St. Louis to Chicago and Memphis. The road loosely follows the western edge of the Mississippi River valley, on a plateau known as Crowley’s Ridge. Following I-55, visitors venture into Bootheel Country, a part of Missouri that more closely resembles the Deep South. Along the way, visitors experience the French settlement of Ste. Genevieve; mighty Cape Girardeau, which played a pivotal role in securing the Mississippi during the Civil War; Sikeston, home to Missouri’s cotton industry; and New Madrid, site of the biggest earthquake in American history.