A Historic marker is an "Alamo"-shaped plaque affixed to the top of a pole and erected next to a significant historic site, battlefield or county courthouse. In the state of Georgia there are roughly 2,000 historic markers. Kevin Levin of the Smithsonian magazine said of the erected signs, "Historical markers are a ubiquitous presence along many of the nation's highways and country roads. You can spot their distinctive lettering, background color, and shape without even realizing what they commemorate."