Tower of Hercules is an 1st century, Roman lighthouse near A Coruna, Galicia, Spain. It was list as a UNESCO World Heritage Sites as the only fully preserved Roman lighthouse that is still used for maritime signaling, hence it is testimony to the elaborate system of navigation in antiquity and it provides an understanding of the Atlantic sea route in Western Europe. The Tower of Hercules was restored in the 18th century in an exemplary manner, which has protected the central core of the original Roman monument while restoring its technical functions. - AsNotedIn