City of Pylos Palaiokastro
Pylos, and its king, Nestor, is referred to by Homeros in both the Iliad and the Odyssey. It has been occupied continuously from the prehistoric to the modern era, mainly as a result of its port, one of the biggest and safest natural ports of the Mediterranean, making it a strategic location from ancient times .
Pylos , “Πýλη-Pyle=Gate” Sphacteria-Navarino Bay
The name Pylos comes from the Greek word “Πýλη-Pyle” which means gate. This name is linked with three locations in the nearby area: Ano Englianos (where Nestor’s palace is situated), Cape Koryfasio (which flourished under Frankish Rule) and the contemporary town itself.
Homeros in the Iliad refers to Nestor, king of the kingdom at Pylos (From book-I , lines 245-250):
“But then soft-spoken Nestor rose, the clear-voiced orator of Pylos, from whose tongue speech sweeter than honey flowed” 
and also in Rhapsody A from Odyssey (lines 90-95):
“Then I will lead him to Sparta and sandy Pylos to gain news of his loyal father’s return, if he can,”
In 1939 during the excavation of the palace of Nestor  at Ano Englianos, by Carl Blegen , a large collection (more than 1000) of well preserved tablets were found, with the incised marks of Linear B scripts. The clay tablets, simply dried in their original form, would have disintegrated long ago had they not been preserved by baking when the palace was destroyed by a fire. This collection of tablets, together with those found at Knosos at Kreta, earlier helped Michael Ventris decipher the Linear B script in 1952. The decipherment of Linear B is often considered for linguistics to be the equivalent of DNA decipherment for biology . The most important conclusion from his work is the fact that Linear B is a Greek script:
“Hitherto the general assumption had been that the Greeks had invaded Greece in the Dark Ages in a series of invasions bringing with them the different dialects of Greek. Suddenly this was all wrong. The Greeks were already in Greece, and Greek becomes the world’s prime example of a long lived language. There was also the further implication that Minoan Linear B was not essentially Minoan at all but Mycenaean, and represented a Mycenaean takeover of the Minoan palaces in their final stages and that Minoan Linear A, which is still undeciphered but is generally considered to be non-Greek, represents the original Minoan language.” 
The decipherment of word tripod  fromTablet P641  found at Pylos, which is considered by Ventris as the roseta stone for Linear B 
| Word copper in Linear B 
During the Peloponnesian war (431–404 BC), a conflict between Athens and Sparta, Demosthenes an Athenian general built a fort at Pylos. The naval battle that took place in the bay (425 BC) is known as the Battle of Sphacteria. The Athenians had besieged the Spartan troops. The Spartans sued for peace, but this was rejected on the advice of Cleon, who lead new forces which captured 300 Spartans who surrendered at Pylos. This event demolished the Spartan myth that they would never surrender.
Bronze Spartan shield (425 BC). Ttrophy of Athens after the victory in Sfaktiria. Athens Stoa Attalos 
In the Middle Ages, during the fourth crusade, Pylos was conquered by the Crusaders (1204) and later by the Franks. A castle was erected in 1284, the Palaiokastro at the north side of the bay, and during this period the place was known as Navarino. In 1423, it was occupied by ottomans, as was the rest of Peloponnese, and was used as a naval base. After the defeat of Ottomans at the battle of Lepanto 1571, its importance as a naval base increased and a new castle was built at the entrance to the gulf, the Neokastro (1572/1573). Throughout these years the area was occupied and reoccupied by Venetians and Ottomans in their continuing power struggle, points to its strategic importance being located on the sea route to the east used by Venetians [17, 18].
Air view of Palaiokastro 
During the Greek War of Independence which began in 1821, the region was alternately under the authority of the Greeks or Ottomans till 1827 when an historic event took place at the bay, the battle of Navarino (20-October-1827). On this day the combined Ottoman–Egyptian fleets were defeated by the allied navies of the United Kingdom,