Eventhe buildings on the Acropolis that seemed to have a purely religious purpose actually had other functions. An example is the altar of Zeus, which was built to commemorate the victory over the Galatians, so it was a monument to the kingdom rather than a place of Zeus worship. The small size of the temples located on the Acropolis also testified to the secondary sacred role of this part of the city. The most important buildings served social and cultural functions: a great theatre, a huge library, spacious stoas, royal palaces, and military barracks.
The topography of the hill required that the buildings were arranged along a north-south axis, but their faades were directed towards the west so that they could be seen from a great distance. The royal residences were located at the end of the road leading from the main gate, in the northern part of the Acropolis. This location provided them with greater safety in the event of an invasion.
The plan of the Acropolis runs along arches located on terraces. Thanks to these terraces, the freestanding buildings, rising one above the other, give the impression of a compact and well-organized development. It's difficult to believe that they weren't built at the same time, but they are the result of the expansion of the Acropolis over the period of 150 years. Construction work began during the reign of Eumenes II, when the most important buildings on the Acropolis were constructed, including the defensive walls, the altar of Zeus, the library, the palace, and the theatre. Already at this stage, the general outline of the Acropolis plan was visible, creating the shape of a fan, the rays of which converge in the place where the theatre is located.
The name heroon usually refers to a temple or a sanctuary built in honour of a Greek or Roman hero, often placed above his tomb. The Heroon on the Acropolis was dedicated to the kings of Pergamon, especially Attalus I and Eumenes II, who were worshipped there as gods. Due to this connection, the structure may be called Attaleion or Eumeneion.
The building consisted of an internal courtyard (peristyle) measuring 18 by 21 meters, surrounded by a colonnade, to which a stoa with seven marble columns adjoined in the east. At the end of the stoa there was a cult room. In Roman times, the building was subject to some modifications, but their effects have not survived to this day.
Under this building which dates to the Hellenistic times, there was an earlier, simpler in construction, sanctuary and residential buildings. On the northern side of the building there are the remains of a long building that housed shops.
The temple of Athena stood on the terrace above the theatre. It was built in the Doric order and was surrounded by a colonnade: 10 columns on each side and 6 columns at the front and back of the building. Only fragments of the foundations and part of the side wall up to 1.20 meters high have survived to this day. Fragments of tall and slender columns and the temple's architrave are located in Berlin.
The Pergamene temple of Athena, strongly reminiscent in style of the Athenian Parthenon, was built in the 3rd century BCE, most likely during the times of Philetaerus. Eumenes II built two-story stoas in the style typical of the Hellenistic period, on the northern and eastern sides of the temple. A propylon, a monumental gate supported on four columns, led to their interior. It was reconstructed using preserved fragments and can also be admired in Berlin.
The famous Pergamene library was built during the reign of Eumenes II, but earlier than the neighbouring stoa because entry to the library was only possible from the upper floor of the northern stoa. Currently, little has survived of this building, the ruins of which look extremely modest compared, for example, to the reconstructed library of Celsus in Ephesus.
In its heyday, the library had a spacious reading room measuring 13.5 by 16 meters. It was surrounded on three sides by shelves with books, which were not directly adjacent to the walls, but were moved away from them by 50 cm to protect the books from moisture and ensure good air circulation. At the northern wall there was a podium on which stood a 3.5-meter-high statue of the goddess Athena - currently on display in Berlin.
The glory days of the Pergamon library ended when Mark Antony gave its collections to Cleopatra as a wedding gift. No list of the books that comprised the collection has been preserved, so its size is unknown. Plutarch - a Greek writer and philosopher - claimed that it contained as many as 200,000 books. Of course, this name covered manuscripts written on papyrus and parchment, rolled or folded, and then stored on library shelves.
The ruins of the palaces of the kings of Pergamon are located on the eastern side of the road running alongside the temple of Athena and the library. These palaces were once large buildings and had internal courtyards (peristyles). It is assumed that the northern, smaller building was built during the reign of Attalus I, and the larger palace belonged to Eumenes II.
The courtyard of Eumenes II's palace had the shape of a square with sides 25 meters long. There was an altar on it. The building had a large hall, a room for religious ceremonies, and a water cistern. The mosaics found in both palaces are located in Berlin.
The arsenals are located at the northern end of the Acropolis, at a level 10 meters lower than the palaces and the Trajaneum. These are five long buildings standing parallel to each other. The length of the buildings ranges from 39 to 48 meters.
The arsenals were built during the reigns of Attalus I and Eumenes II. 13 different types of andesite stone projectiles were found in their ruins. The smallest of them had a diameter of 15 cm and weighed less than 3 kg, and the largest, with a diameter of 40 cm, weighed over 75 kg. In Hellenistic times, such stone projectiles and were launched from a stone thrower called palintonon.
The location of the arsenals at the edge of the Acropolis gave the city's defenders an excellent view of the surrounding area, and at the same time the arsenals were hidden from the sight of the approaching enemy. Currently, this place offers visitors the opportunity to take interesting photos of the surroundings of Bergama.
Trajaneum is probably the most recognizable building from Pergamon, known from albums, posters, and postcards. At the same time, it is one of the few structures on the Acropolis dating from the Roman times, and not from the earlier Hellenistic era.
The temple dedicated to Emperor Trajan stands on a terrace measuring 68 by 58 meters. It is located at the highest point of the hill, so it was certainly erected on a previously existing building from the Hellenistic times. The area for the construction of the temple was levelled by constructing a foundation supported by arches. These underground rooms were used as warehouses in the Byzantine times.
The Trajan's temple is surrounded by stoas on three sides, but the stoa located at the back of the temple is 5 meters higher than the others due to the lay of the land. The temple is the so-called peripteros, which means that it was surrounded by a single colonnade - 9 columns along the longer sides and 6 columns along the shorter sides. Currently, the temple has been partially reconstructed.
Although the temple is known as the Trajaneum and was built on the orders of Trajan's successor, Emperor Hadrian, actually both of these rulers were worshipped there. This is evidenced by the two heads of monumental statues of Hadrian and Trajan discovered on its premises. They are exhibited in Berlin, like many other valuable finds from the area of Pergamon.
The theatre in Pergamon is one of the most beautiful buildings from the Hellenistic times. Both its construction, which takes advantage of the natural slope of the terrain, and its location in the central point of the fan-shaped plan of the Acropolis make it a unique building.
The theatre's auditorium consists of 80 rows, the highest of which is located 36 meters above the level of the orchestra. The auditorium is divided horizontally by two platforms (the so-called diazomata) and vertically by stairs - into seven parts in the lower section, and into six parts in the middle and upper sections. In total, the theatre could accommodate up to 10,000 spectators. The royal box, made of marble, is located in the centre of the theatre, just above the lower platform.
In the Hellenistic times, the stage was made of wood and assembled only before the performance, and dismantled after it. This solution resulted from the need to achieve harmony with nature and a view that stretched from the theatre to the valley, undisturbed by unnecessary elements. The stage was mounted on the road leading to the temple of Dionysus, located beneath the theatre, at the northern end of the 250-meter-long promenade. Rows of square holes that were used to mount a stage have been preserved on the promenade to this day.
This temple is in the form of the so-called prostylos, which means that in front of its vestibule, i.e. pronaos, four columns stood in one row. The temple faces south and is accessed by 25 steps. The temple altar has been preserved in excellent condition.
Only the foundation of the Altar of Zeus has survived in the Acropolis of Pergamon, under which houses from the early Hellenistic era have been discovered. The altar, taken to Berlin by its discoverer - Carl Humann - was reconstructed in the Pergamon Museum.
The altar was built on a rectangular plan and was open on the western side. A monumental staircase, 20 meters wide, led between the two forward side wings of the building. Above the plinth and below the Ionic colonnade, there was a large frieze depicting mythological scenes related to the battle between gods and giants. It is a unique work, both because of its size (120 meters long and 2.3 meters high) and because of its artistic value. Additionally, it depicts the entire Olympic pantheon.
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