St Johns Light

St. Johns Light is an active lighthouse in Jacksonville, Florida, that marks the mouth of the St. Johns River. It stands on the grounds of Naval Station Mayport and was built in 1954 to replace a lightship that had been in service there. The fourth lighthouse structure at this location since 1830, it followed several predecessors that had to be demolished or abandoned because of erosion or an unfavorable site. The tower, cast in concrete, is 66 feet (20 meters) tall and its light can be seen from about 22 miles (35 kilometers) away. Originally equipped with an aviation-style signal, its lighting system was modernized in 1998. The tower was automated in 1967 and added to the National Register of Historic Places in 2018. While the historic building of the old 1858 lighthouse nearby has been restored, St. Johns Light continues to serve maritime safety. Visitors can trace the historical significance of the site and the evolution of lighthouse construction along this coast.