The construction of Fort Clinch, Amelia Island's most famous historic site, began in 1847, and continued until 1861, when the Civil War erupted. Confederate forces occupied the fort, but within a year Union troops had forced them to withdraw. The fort also played a role in the Spanish-American War when U.S. forces utilized its location for a few months.

Today, Fort Clinch State Park is a scenic and educational adventure, offering an exciting excursion for history enthusiasts and nature-lovers. Fishing, hiking, and camping sites are scattered throughout the 1,121 acres.

Beach access is available on the park's eastern side. One weekend per month, park rangers dress in either Confederate or Union uniforms and re-enact the daily life of Civil War-era soldiers. Activities include cooking, infantry demonstrations, marching and sentry duty. Amelia Island offers a wealth of recreational activities set in an historic and scenic landscape, perfect for a brief visit or a relaxing, extended exploration.