Caesarea_2022 10 20_0802
Caesarea was developed over a period of 12 Years into a grand city and major seaport and he dedicated it to Roman Emperor Caesar Augustus, who had returned it to Herod after wresting it away from Cleopatra. It left a spectacular Roman amphitheater that is still used as a performance venue today. Caesarea, often simplified to Keisarya, and Qaysaria, is an affluent town in north-central Israel, which inherits its name and much of its territory from the ancient city of Caesarea Maritima. Located midway between Tel Aviv and Haifa. The ancient city of Caesarea Maritima was built by Herod the Great about 25–13 BCE as a major port. It served as an administrative center of the province of Judaea in the Roman Empire, and later as the capital of the Byzantine province of Palaestina Prima. During the Muslim conquest in the 7th century, it was the last city of the Holy Land to fall to the Arabs. The city degraded to a small village after the provincial capital was moved from here to Ramla and had an Arab majority until Crusader conquest. Under the Crusaders it became once again a major port and a fortified city. It was diminished after the Mamluk conquest. In 1884, Bosniak immigrants settled there establishing a small fishing village. Hellenistic and early Roman periods - In 90 BCE, Jewish ruler Alexander Jannaeus captured Straton's Tower as part of his policy of developing the shipbuilding industry and enlarging the Hasmonean kingdom. Straton's Tower remained a Jewish settlement for two more generations, until the area became dominated by the Romans in 63 BCE, when they declared it an autonomous city. Herodian city of Caesarea Maritima (22 BCE – 6CE) - Caesarea Maritima was built in Roman-ruled Judea under the Jewish client King Herod the Great during c. 22-10/9 BCE near the ruins of the small naval station of Straton's Tower. The site, along with all of Judea, was awarded by Rome to Herod the Great in 30 BCE. The pagan city underwent vast changes under Herod, who renamed it Caesarea in honor of the Roman emperor, Caesar Augustus. Caesarea Maritima was known as the administrative, economic, and cultural capital of the Palestinian province from this time. In 22 BCE, Herod began construction of a deep-sea harbor named Sebastos and built storerooms, markets, wide roads, baths, temples to Rome and Augustus, and imposing public buildings. Herod built his palace on a promontory jutting out into the sea, with a decorative pool surrounded by stoas. Every five years, the city hosted major sports competitions, gladiator games, and theatrical productions in its theatre overlooking the Mediterranean Sea. Construction of Sebastos Harbor / King Herod built the two jetties of the harbor between 22 and 15 BCE, and in 10/9 BCE he dedicated the city and harbor to Emperor Augustus (Sebastos is Greek for Augustus). The pace of construction was impressive considering the project's size and complexity. At its height, Sebastos was one of the most impressive harbors of its time. It had been constructed on a coast that had no natural harbors and served as an important commercial harbor in antiquity, rivaling Cleopatra's harbor at Alexandria. Josephus wrote: "Although the location was generally unfavorable, [Herod] contended with the difficulties so well that the solidity of the construction could not be overcome by the sea, and its beauty seemed finished off without impediment." When it was built in the 1st century BCE, the harbor of Sebastos ranked as the largest artificial harbor built in the open sea, enclosing around 100,000 m2. The breakwaters were made of lime and pozzolana, a type of volcanic ash, set into an underwater concrete. Herod imported over 24,000 m3 of pozzolana from the name-giving town of Puteoli, today Pozzuoli in Italy, to construct the two breakwaters: the southern one 500 meter, and the northern one 275 meter long. A shipment of this size would have required at least 44 shiploads of 400 tons each. Herod also had 12,000 m3 of local kurkar stone quarried to make rubble and 12,000 m3 of slaked lime mixed with the pozzolana. Architects had to devise a way to lay the wooden forms for the placement of concrete underwater. One technique was to drive stakes into the ground to make a box and then fill it with pozzolana concrete bit by bit. However, this method required many divers to hammer the planks to the stakes underwater and large quantities of pozzolana were necessary. Another technique was a double planking method used in the northern breakwater. On land, carpenters would construct a box with beams and frames on the inside and a watertight, double-planked wall on the outside. This double wall was built with a 23 cm (9 in) gap between the inner and outer layer. Although the box had no bottom, it was buoyant enough to float out to sea because of the watertight space between the inner and outer walls. Once it was floated into position, pozzolana was poured into the gap between the walls and the box would sink into place on the seafloor and be staked down in the corners. The flooded inside area was then filled by divers bit by bit with pozzolana-lime mortar and kurkar rubble until it rose above sea level. On the southern breakwater, barge construction was used. The southern side of Sebastos was much more exposed than the northern side, requiring sturdier breakwaters. Instead of using the double planked method filled with rubble, the architects sank barges filled with layers of pozzolana concrete and lime sand mortar. The barges were similar to boxes without lids, and were constructed using mortise and tenon joints, the same technique used in ancient boats, to ensure they remained watertight. The barges were ballasted with 0.5 meters of pozzolana concrete and floated out to their position. With alternating layers, pozzolana-based and lime-based concretes were hand-placed inside the barge to sink it and fill it up to the surface. However, there were underlying problems that led to its demise. Studies of the concrete cores of the moles have shown that the concrete was much weaker than similar pozzolana hydraulic concrete used in ancient Italian ports. For unknown reasons, the pozzolana mortar did not adhere as well to the kurkar rubble as it did to other rubble types used in Italian harbors. Small but numerous holes in some of the cores also indicate that the lime was of poor quality and stripped out of the mixture by strong waves before it could set. Also, large lumps of lime were found in all five of the cores studied at Caesarea, which shows that the mixture was not mixed thoroughly. However, stability would not have been seriously affected if the harbor had not been constructed over a geological fault line that runs along the coast. Seismic action gradually took its toll on the breakwaters, causing them to tilt down and settle into the seabed. Studies of seabed deposits at Caesarea have shown that a tsunami struck the area sometime during the 1st or 2nd century. Although it is unknown if this tsunami simply damaged or completely destroyed the harbor, it is known that by the 6th century the harbor was unusable and today the jetties lie more than 5 meters underwater. During the Byzantine period, Caesarea became the capital of the new province of Palaestina Prima in 390. As the capital of the province, Caesarea was also the metropolitan see, with ecclesiastical jurisdiction over Jerusalem, when rebuilt after the destruction in the year 70. In 451, however, the Council of Chalcedon established Jerusalem as a patriarchate, with Caesarea as the first of its three subordinate metropolitan sees. Caesarea remained the provincial capital throughout the 5th and 6th centuries. It fell to Sassanid Persia in the Byzantine–Sasanian War of 602–628, in 614, and was re-conquered by Byzantium in 625.
Caesarea_2022 10 20_0802
Caesarea was developed over a period of 12 Years into a grand city and major seaport and he dedicated it to Roman Emperor Caesar Augustus, who had returned it to Herod after wresting it away from Cleopatra. It left a spectacular Roman amphitheater that is still used as a performance venue today. Caesarea, often simplified to Keisarya, and Qaysaria, is an affluent town in north-central Israel, which inherits its name and much of its territory from the ancient city of Caesarea Maritima. Located midway between Tel Aviv and Haifa. The ancient city of Caesarea Maritima was built by Herod the Great about 25–13 BCE as a major port. It served as an administrative center of the province of Judaea in the Roman Empire, and later as the capital of the Byzantine province of Palaestina Prima. During the Muslim conquest in the 7th century, it was the last city of the Holy Land to fall to the Arabs. The city degraded to a small village after the provincial capital was moved from here to Ramla and had an Arab majority until Crusader conquest. Under the Crusaders it became once again a major port and a fortified city. It was diminished after the Mamluk conquest. In 1884, Bosniak immigrants settled there establishing a small fishing village. Hellenistic and early Roman periods - In 90 BCE, Jewish ruler Alexander Jannaeus captured Straton's Tower as part of his policy of developing the shipbuilding industry and enlarging the Hasmonean kingdom. Straton's Tower remained a Jewish settlement for two more generations, until the area became dominated by the Romans in 63 BCE, when they declared it an autonomous city. Herodian city of Caesarea Maritima (22 BCE – 6CE) - Caesarea Maritima was built in Roman-ruled Judea under the Jewish client King Herod the Great during c. 22-10/9 BCE near the ruins of the small naval station of Straton's Tower. The site, along with all of Judea, was awarded by Rome to Herod the Great in 30 BCE. The pagan city underwent vast changes under Herod, who renamed it Caesarea in honor of the Roman emperor, Caesar Augustus. Caesarea Maritima was known as the administrative, economic, and cultural capital of the Palestinian province from this time. In 22 BCE, Herod began construction of a deep-sea harbor named Sebastos and built storerooms, markets, wide roads, baths, temples to Rome and Augustus, and imposing public buildings. Herod built his palace on a promontory jutting out into the sea, with a decorative pool surrounded by stoas. Every five years, the city hosted major sports competitions, gladiator games, and theatrical productions in its theatre overlooking the Mediterranean Sea. Construction of Sebastos Harbor / King Herod built the two jetties of the harbor between 22 and 15 BCE, and in 10/9 BCE he dedicated the city and harbor to Emperor Augustus (Sebastos is Greek for Augustus). The pace of construction was impressive considering the project's size and complexity. At its height, Sebastos was one of the most impressive harbors of its time. It had been constructed on a coast that had no natural harbors and served as an important commercial harbor in antiquity, rivaling Cleopatra's harbor at Alexandria. Josephus wrote: "Although the location was generally unfavorable, [Herod] contended with the difficulties so well that the solidity of the construction could not be overcome by the sea, and its beauty seemed finished off without impediment." When it was built in the 1st century BCE, the harbor of Sebastos ranked as the largest artificial harbor built in the open sea, enclosing around 100,000 m2. The breakwaters were made of lime and pozzolana, a type of volcanic ash, set into an underwater concrete. Herod imported over 24,000 m3 of pozzolana from the name-giving town of Puteoli, today Pozzuoli in Italy, to construct the two breakwaters: the southern one 500 meter, and the northern one 275 meter long. A shipment of this size would have required at least 44 shiploads of 400 tons each. Herod also had 12,000 m3 of local kurkar stone quarried to make rubble and 12,000 m3 of slaked lime mixed with the pozzolana. Architects had to devise a way to lay the wooden forms for the placement of concrete underwater. One technique was to drive stakes into the ground to make a box and then fill it with pozzolana concrete bit by bit. However, this method required many divers to hammer the planks to the stakes underwater and large quantities of pozzolana were necessary. Another technique was a double planking method used in the northern breakwater. On land, carpenters would construct a box with beams and frames on the inside and a watertight, double-planked wall on the outside. This double wall was built with a 23 cm (9 in) gap between the inner and outer layer. Although the box had no bottom, it was buoyant enough to float out to sea because of the watertight space between the inner and outer walls. Once it was floated into position, pozzolana was poured into the gap between the walls and the box would sink into place on the seafloor and be staked down in the corners. The flooded inside area was then filled by divers bit by bit with pozzolana-lime mortar and kurkar rubble until it rose above sea level. On the southern breakwater, barge construction was used. The southern side of Sebastos was much more exposed than the northern side, requiring sturdier breakwaters. Instead of using the double planked method filled with rubble, the architects sank barges filled with layers of pozzolana concrete and lime sand mortar. The barges were similar to boxes without lids, and were constructed using mortise and tenon joints, the same technique used in ancient boats, to ensure they remained watertight. The barges were ballasted with 0.5 meters of pozzolana concrete and floated out to their position. With alternating layers, pozzolana-based and lime-based concretes were hand-placed inside the barge to sink it and fill it up to the surface. However, there were underlying problems that led to its demise. Studies of the concrete cores of the moles have shown that the concrete was much weaker than similar pozzolana hydraulic concrete used in ancient Italian ports. For unknown reasons, the pozzolana mortar did not adhere as well to the kurkar rubble as it did to other rubble types used in Italian harbors. Small but numerous holes in some of the cores also indicate that the lime was of poor quality and stripped out of the mixture by strong waves before it could set. Also, large lumps of lime were found in all five of the cores studied at Caesarea, which shows that the mixture was not mixed thoroughly. However, stability would not have been seriously affected if the harbor had not been constructed over a geological fault line that runs along the coast. Seismic action gradually took its toll on the breakwaters, causing them to tilt down and settle into the seabed. Studies of seabed deposits at Caesarea have shown that a tsunami struck the area sometime during the 1st or 2nd century. Although it is unknown if this tsunami simply damaged or completely destroyed the harbor, it is known that by the 6th century the harbor was unusable and today the jetties lie more than 5 meters underwater. During the Byzantine period, Caesarea became the capital of the new province of Palaestina Prima in 390. As the capital of the province, Caesarea was also the metropolitan see, with ecclesiastical jurisdiction over Jerusalem, when rebuilt after the destruction in the year 70. In 451, however, the Council of Chalcedon established Jerusalem as a patriarchate, with Caesarea as the first of its three subordinate metropolitan sees. Caesarea remained the provincial capital throughout the 5th and 6th centuries. It fell to Sassanid Persia in the Byzantine–Sasanian War of 602–628, in 614, and was re-conquered by Byzantium in 625.