Tower of Hercules

The Tower of Hercules () is the oldest extant lighthouse known. It has an ancient Roman origin on a peninsula about from the centre of A Coruña, Galicia, in north-western Spain. Until the 20th century, it was known as the Farum Brigantium. The Latin word "farum" is derived from the Greek Φάρος, "Pharos", for the Lighthouse of Alexandria. The structure stands tall and overlooks the North Atlantic coast of Spain. It was built in the 1st century and competently renovated in 1791. 
There is a sculpture garden featuring works by Pablo Serrano and Francisco Leiro. The Tower of Hercules is a National Monument of Spain, and has been a UNESCO World Heritage Site since 27 June 2009. It is the second-tallest lighthouse in Spain, after the Faro de Chipiona.
Construction and history.
The tower is known to have existed by the 1st century, built or perhaps rebuilt under Trajan, possibly on foundations following a design that was Phoenician in origin. Built with the original plans of the Lighthouse of Alexandria. Its base preserves a cornerstone with the inscription , permitting the original lighthouse tower to be ascribed to the architect Gaius Sevius Lupus, from Aeminium (present-day Coimbra, Portugal) in the former province of Lusitania, as an offering dedicated to the Roman god of war, Mars. The tower has been in constant use since the 2nd century and is considered to be the oldest existent lighthouse. The original tower was shorter and wider, as the surviving core was surrounded by a spiral ramp. The outline of this ramp is still visible in the restored exterior. The final storey was likely surmounted with a dome.
The earliest known reference to the lighthouse at Brigantium is by Paulus Orosius in "Historiae adversum Paganos" written around 415–417:
Secundus angulus circium intendit, ubi Brigantia Gallaeciae civitas sita altissimum farum et inter pauca memorandi operis ad speculam Britanniae erigit<br>("At the second angle of the circuit circumnavigating Hispania, where the Gallaecian city of Brigantia is sited, a very tall lighthouse is erected among a few commemorative works, for looking towards Britannia.")
In 1788, the surviving tower core was given a neoclassical restoration, including a new fourth story. The restoration was undertaken by naval engineer Eustaquio Giannini during the reign of Charles III of Spain, and was finished in 1791. UNESCO praised the work: "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". Within, the much-repaired Roman and medieval masonry may be inspected.
The Romans who conquered this region of Spain believed it to be, in a figurative sense, the end of the earth – hence its name, "Finisterra". This region is notorious for shipwrecks, earning it the name "Costa da Morte", "Coast of Death".
Myths.
Through the millennia many mythical stories of the lighthouse's origin have been told. According to a myth that mixes Celtic and Greco-Roman elements, the hero Hercules slew the giant tyrant Geryon after three days and three nights of continuous battle. Hercules then—in a Celtic gesture—buried the head of Geryon with his weapons and ordered that a city be built on the site. The lighthouse atop a skull and crossbones representing the buried head of Hercules’ slain enemy appears in the coat-of-arms of the city of Coruña.
Another legend embodied in the 11th-century Irish compilation "Lebor Gabála Érenn"—the "Book of Invasions"—King Breogán, the founding father of the Galician Celtic nation, constructed a massive tower of such a grand height that his sons could see a distant green shore from its top. The glimpse of that distant green land lured them to sail north to Ireland. According to the legend Breogán's descendants stayed in Ireland and are the Celtic ancestors of the current Irish people. A colossal statue of Breogán has been erected near the Tower.
Possible locations of Brigantia.
Early geographical descriptions on the location of "Brigantia" point out that the town could be actually located in Corunna or in the locality of the modern town of Betanzos. There is some debate about this, as the people from Betanzos claim it as a fact that Betanzos was referred to as "the former city of Brigancia" until the 17th century, both in literary accounts as well as in maps, and they also believe that the name "Betanzos" is a phonetical evolution from "Brigantium > Breganzo > Betanzos". This, however, could be a false etymology.
The Betanzos tradition claims that the port of Betanzos was getting too small for the larger mediaeval ships, and that king Alfonso IX of León decided to create a bigger port nearby in the 13th century. The place he chose was an uninhabited place called "Clunia", which later on evolved to "Cruña" and Coruña, and so (in English) to Corunna. The place name Clunia is believed to come from the Proto-Celtic root *klou̯ni (cf. Old Irish "cluain"), meaning "meadow".
However, the Coruña tradition maintains that the "port" of Betanzos (which is a fluvial one, in a quite small river) was far too small for Roman warships to dock at, for example when Julius Caesar visited this area with "more than a hundred triremes". It is demonstrated that Corunna was an important Roman site, as graveyards and other Roman remains have been found in the city centre, demonstrating that the site was inhabited in the Roman period, and was deserted only during the early Middle Ages due to Viking attacks, when its people moved inland to O Burgo (now Culleredo). The proponents of Corunna also explain the different name as a change that occurred in the Middle Ages, and point out that the lighthouse, which was called "Pharum Brigantium", was erected in Corunna, and is at least 25 km (or a day's walk) from Betanzos.
Also in La Coruña there was the tribe of the Brigantes, in Betanzos the tribe of the Nemeti. Today almost all historians agree that Brigantia is La Coruña. Brigantia is not only La Coruña; today it is believed that Brigantia was located from La Coruña until A Laracha and Carballo in the Bergantiños region (Brigantes > Brigantinos > Bergantiños undoing the modification of medieval Galician).