The Port Hudson State Historic Site is located on the Mississippi River north of Baton Rouge near Port Hudson, Louisiana. The site is the location of the longest siege[citation needed] in American history during the American Civil War from May 23 through July 9, 1863. The state of Louisiana maintains the site, which includes a museum about the siege, artillery displays, redoubts and interpretive plaques. Living history re-enactments are held each year.