St. Marks Lighthouse is located in St. Marks National Wildlife Refuge. Built in 1831, St. Marks Lighthouse is the second oldest lighthouse in Florida and is listed on the U.S. National Register of Historic Places. In the years following its construction, the lighthouse has been threatened by wars and natural disasters.

During the Second Seminole Indian War in 1835, the keeper of the lighthouse asked for troops and a boat, but fortunately, the Seminoles did not attack the lighthouse. In 1842, the lighthouse relocated due to problems with erosion. It survived numerous storms including some very destructive hurricanes. The lighthouse also came under threat during the Civil War, but fortunately, it survived.

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