Well, although actually I dont reside in Cadiz I was born there and my family is from Cadiz. And I believe that this pastiche about the history of Cadiz would be more interesting.
Cadiz: Agadir, Gadir, Gadira or Gaddir ( stronghold ) for the Carthaginians, the Greek Gadeira, and the Latin Gades. Named after Neptune´s son According to Platon, built between Hercules´ pillars. One of the oldest city in Europe, sits on a small, narrow, peninsula of only 10.58 Km long. Today Cadiz has a population of 160,000 inhabitants. Until the construction of the Carranza Bridge in 1969, there only existed the small strip of sand connecting Cadiz to San Fernando, its closest neighbor, making this the only land connection to the rest of Europe.
The almost island positioning of Cadiz, his very extensive bay, and its location between the Mediterranean Sea and the Atlantic Ocean has always kept the city as a major focal point along the ages.
History and mythology are more closely linked in Cadiz than in any other city in Spain. Its mitologycal origins date back 3500 years. Cadiz plays an important role in Greek mythology. Legends speak of the fatal encounter between Hercules and Giant King Gerion, situating it in Cadiz (called Gadeira and Erytheia): Hercules killed the three-bodied winged giant shooting an arrow at the joint of the three bodies. Cadiz itself is one of the 'Twelve Labours of Hercules', that is, the separation of Europe from Africa. Hercules presence survives to this day in the city´s coat of arms where he stands between the pillars that announced the end of the world.
It is said too in some greeks texts that the first Inhabitants of the island of Cadiz were the "sea people", who came after the Troye war. Historically the actual city was founded by Phoenician sailors as base to commerce with the ancient native civilization of Tartessus (the biblical Tarshish). Its foundation is ascribed to Phoenician merchants from Tyre, as early as 1100 B.c. In the 7th century b.C it had already become the great mart of the west for amber and tin from the Cassiterides.
In this epoch was built in the city suroundings, a temple, consagrated to Melkart, a phoenician god later Identified with Herakleion or Hercules by the Greek who thought that Hercules´ashes were kept there. A very important holy place in the ancient times and an enormous building apparently with shape of zigurat/lighthouse that lasted to the 12th century a.C.
About 501 B.C. Cadiz was occupied by the Carthaginians, who made it their base for the conquest of southern Iberia, and in the 3rd century for the equipment of the armaments with which Hannibal, who vowed eternal hatred to Rome at Hercules's temple, undertook to destroy the power of Rome. But the loyalty of Gades, already weakened by trade rivalry with Carthage, gave way after the second Punic War.Its citizens welcomed the victorious romans commanded for Scipion the Africanus (206 b.C) and assisted them in turn to fit out an expedition against Carthage.
Thenceforward, its rapidly-growing trade in. dried fish and meat, and in all the produce of the fertile Baetis (Guadalquivir) valley, attracted many Greek settlers; while men of learning, such as Pytheas in the 4th century B.C., Polybius and Artemidorus of Ephesus in the 2nd, and Posidonius in the 1st, came to study the ebb and flow of its tides, unparalleled in the Mediterranean. C. Juius Caesar lived in Cadiz for some time too. It was here in 69 BC at the age of 31, while serving on the circuit court of the governor in the city of Gades, that supposedly he saw a statue of Alexander the Great of Macedonia in the temple of Hercules. He either sighed very sadly or cried a little. When asked why he says:
"Do you think I have not just cause to weep, when I consider that Alexander at my age had conquered so many nations, and I have all this time done nothing that is memorable."
Twenty years later, Julius Caesar, conferred the civitas of Rome on all its citizens in 49 B.C.; and, not long after L. Cornelius Balbus Minor built what was called the New City, constructed the harbour which is now known as Puerto Real, and spanned the strait of Santi Petri with the bridge which unites the Isla de Leon (San Fernando) with the mainland, and is now known as the Puente de Zuazo, after Juan Sanchez de Zuazo, who restored it in the 15th century. Under Augustus, when it was the residence of no fewer than 500 equites, a total only surpassed in Rome and Padua, Gades was made a municipium with the name of Augusta Urbs Gaditana, and his citizens ranked next to those of Rome. In the 1st century A.D. it was the birthplace or home of several famous authors, including Lucius Columella, poet and writer on husbandry; but it was more renowned for gaiety and luxury than for learning. Juvenal and Martial write of Jocosae Gades, Cadiz the Joyous, as naturally as the modern Andalusian speaks of Cadiz la Joyosa; and throughout the Roman world its cookery and its dancing-girls were famous.
In the 5th century, however, the overthrow of Roman dominion in Spain by the Visigoths involved Cadiz in destruction. Moorish rule over the port, which was renamed Jeziral-Kadis, lasted from 711 until 1262. About 1145 Ben Maimun, an Almoravid admiral seized Cadiz and demolished the Ancient Temple of Hercules to look for legendary treassures supposedly hidden in his entrails. The legend said that who would dare to destroy Hercules's temple would die violently. Curiously, Ben Maimun died at Christians's hands some months later.
After Christians reconquered Cadiz, the city was rebuilt and repeopled by Alphonso X of Castile ending many centuries of total decadence. Since 1262 to the fall of Granada kingdom, Cadiz was near to the frontier beetwen Christian and muslim Spain, being a source of war material and merceneries for christian kings.
Its renewed prosperity dates from the discovery of America in 1492. As the headquarters of the Spanish treasure fleets, it soon recovered its position as one of the wealthiest port of western Europe,and consequently it was a favorite point of attack for the enemies of Spain.
During the 16th century it repelled a series of raids by the Barbary corsairs; in 1587 all the shipping in its harbour was burned by the English squadron under Sir Francis Drake; in 1596 the fleet of the earl of Essex and Lord Charles Howard sacked the city, and destroyed forty merchant vessels and thirteen warships. After this the city was fortified. Some years later the wealth recovered in previous assaults tempted the duke of Buckingham to promote the fruitless expedition to Cadiz of 1626; thirty years later Admiral Blake blockaded the harbour in an unsuccessful attempt to intercept the treasure fleet; and in 1702 another attempt was made by the British under Sir George Rooke and the duke of Ormonde.
During the 18th century the wealth of Cadiz became greater than ever; from 1720 to 1765, when it enjoyed a monopoly of the trade with Spanish America, the city annually imported gold and silver in huge amomounts. With the closing years of the century, however, it entered upon a period of misfortune. From February 1797 to April 1798 it was blockaded by the British fleet, after the battle of Cape St Vincent; and in 1800 it was bombarded by Nelson. Although this new decadence was indeed due to Seville taking his place as center of commerce with american colonies,
In 1808 during napoleonic wars the citizens captured a French squadron which was imprisoned by the British fleet in the inner bay. From February 1810 until the duke of Wellington raised the siege in August 1812, Cadiz resisted the French forces sent to capture it; and during these two years it served as the capital of all Spain. In fact Cadiz and San Fernando were the only enclaves not conquered by Napoleon. Here, too, the Cortes met and promulgated the famous Liberal constitution of March 1812. To secure a renewal of this constitution, the citizens revolted in 1820; the revolution spread throughout Spain; the king, Ferdinand VII., was imprisoned at Cadiz, which again became the seat of the Cortes; and foreign intervention alone checked the movement towards reform. A French army under the duc d´Angoulme, allied with the spanish crown, seized Cadiz in 1823, secured the release of Ferdinand who suppressed bloodily the rooted liberalism of Cadiz and Andalucia. However, there were new revolutions in Cadiz in 1843 and 1868, when the city was again the centre of the revolution which effected the dethronement of Queen Isabella. Cadiz even declared his independence from Spain during the 1873 republic.
Since mid 19th century Cadiz was losing importance. Finally The disasters of the Spanish-American war of 1898, was almost catastrophic for local commerce with Cuba and Puerto Rico.
Although his liberal tradition. Cadiz was the place of birth of Jose Antonio Primo de Rivera, who phounded the Spanish Phalanx and at the start of the Spanish civil war of 1936, the cities of Cadiz, along with Saragossa, Seville and Burgos declared their support for the Nationalists (Fascist). This saved Cadiz of any destruction.
Today Cadiz no longer ranks among the first marine cities of the world. Although several great shipping lines call here; big shipbuilding yards and various factories exist on the mainland; and it is the center of a considerable sea trade.
Ancient map of the Bay of Cadiz: (map correction: Where it says "I de Cadis" it is indeed "Isla de Leon" so, San Fernando)