The Mississippi Blues Trail was created by the Mississippi Blues Commission in 2006 to place interpretive markers at the most notable historical sites related to the birth, growth, and influence of the blues throughout (and in some cases beyond) the state of Mississippi. Within the state the trail extends from the Gulf Coast north along several highways to (among other points) Natchez, Vicksburg, Jackson, Leland, Greenwood, Clarksdale, Tunica, Grenada, Oxford, Columbus, and Meridian. The largest concentration of markers is in the Mississippi Delta, but other regions of the state are also commemorated. Several out-of-state markers have also been erected where blues with Mississippi roots has had significance, such as Chicago.