Claros was an ancient Greek sanctuary situated on the coast of Ionia between Smyrna and Ephesus. It belonged to the city of Colophon and was a significant centre of prophecy, as in Delphi and Didyma. The sanctuary contained a temple and oracle of Apollo, who was worshipped here as Apollo Clarius. People from far and wide visited this place to seek guidance and prophecies until the end of the 4th century AD. Hadrian visited the sanctuary and contributed considerably to the temple’s reconstruction.
Coordinates: 38°00’18.0″N 27°11’34.0″E
The cult centre at Claros was a complex devoted to multiple deities, including Artemis, Leto, Dionysus, and Apollo. It was part of the territory controlled by the Ionic city of Colophon, one of the oldest of the twelve cities of the Ionian League. The religious area was constructed around a freshwater spring during the Archaic Period, but there is evidence of a pre-Greek use of the site with a possible Hittite origin. The first known construction is a round altar that dates back to the second half of the 7th century. It was later replaced by a large rectangular altar measuring 14.85 × 6.05 m. In the middle of the 6th century AD, a marble temple was built for Apollo around the spring. Artemis also had her own precinct and a smaller altar measuring 3.50 × 150 m. Later, in the 3rd century AD, construction began on the new altar and the new temple of Apollo, which had a crypt-like adyton from where the oracle delivered his prophecies.
Claros, alongside Didyma, was one of the two major oracular centres in western Asia Minor during the Graeco-Roman period. However, the origins of cultic activity Claros is the oldest in the region. The earliest mention of Claros is in the Homeric Hymn to Apollo (see here) from the 7th century BC. During this period, several altars and a marble temple dedicated to Apollo were constructed near a sacred spring. Later, in the 3rd century BC, various significant structures and cult statues of Apollo, Artemis, and Leto were built, along with a larger Doric Temple of Apollo.
During the 7th century BC, an ancient Sacred Way connected Claros with Colophon and Notion. This route was used for several centuries, at least until 294 BC. The road was decorated with Kouros and Kore statues on both sides. Near the main altar, an impressive array of statues honouring Roman officials lined the Sacred Way in Claros. Some of the individuals commemorated included Pompey, Cicero, and Octavian, who was likely honoured after his Actium victory. Other honorees were Sextus Appuleius II, the half-nephew of the Roman emperor Augustus, L. Valerius Flaccus, the governor of Asia in 61/2, his father (consul 86 BC), and his uncle C. Valerius Flaccus, who was Asia’s governor in the 90s.
The oldest piece of information about the function of the Temple of Apollo in Claros dates back to the Hellenistic Period. According to the Greek historian Pausanias, Alexander the Great had a dream in which he was directed to establish a new city at the base of Mt. Pagos (Smyrna). The Smyrnaeans asked for the interpretation of the dream from the Apollo oracle at Claros, and the oracle replied with a prophetic phrase: “Thrice and four times happy will those men be, who are going to inhabit Pagos beyond the sacred Meles.” As a result, New Smyrna was founded, becoming one of the most prosperous cities in Asia, while the old city of Smyrna was abandoned.
The oracular sanctuary of Apollo Clarius was a sacred place for devotees and visitors seeking divine wisdom and insight. According to inscriptions and literary texts, there were special nights on which consultations would occur, and people would gather at the temple of Apollo. During these nights, a procession of consultants would take place, sacrifices would be made, and hymns would be sung to seek answers from the divine. The Lesser and Greater Claria were two significant festivals that took place every fifth year in the Hellenistic Age, attracting visitors and generating substantial revenue for the sanctuary.
During the early days of the Roman Empire, the Clarian oracle became very popular, attracting a large number of visitors who sought its counsel. The prophecies were highly regarded by rulers, individuals and cities, and their fame was worldwide. For instance, some towns addressed famine and field infertility issues, others about coping with plagues or pirate and bandit attacks. Individuals and delegations from the entire Eastern Mediterranean and beyond sought the oracle’s guidance at Claros.
In AD 18, Germanicus visited the oracle during his travels in the East and received a shocking prediction. The seer predicted that he would soon meet his end. This prediction came true just a year later when he passed away in Syrian Antioch (Antakya) at the young age of 34. Tacitus, a Roman historian who had likely visited the same oracle himself ten years prior as proconsul of Asia, described the procedure for receiving an oracle. He was surprised to discover that, unlike Delphi, no priestess was present but a male priest who spoke on behalf of Apollo (Tac. Ann. 2.54).
The oracular sanctuary consisted of various buildings, such as the temple itself, an altar, treasuries, and other structures that were associated with the oracle’s activities. The temple was built between the 4th and 3rd centuries BC on the site of an earlier sacred building and was completed during the reign of Hadrian. The new temple was constructed on a five-stepped platform with dimensions of 26 × 46 m and had six columns on the narrow sides and eleven on the long sides.
The rectangular-shaped temple had sides measuring 26 and 46 meters. There were 11 columns on the longer sides and six on the shorter ones, all in the Doric order. The diameter of the drums of these columns was up to 1.6 meters, and archaeologists have discovered seven capitals and around 150 drums. The temple complex included a sacred spring and a cave where the oracle would deliver prophecies in a trance-like state. After an oracle was pronounced, the believers wrote a votive and memorial text referencing the priests and praising Apollo. Over time, hundreds of inscriptions covered the temple’s columns, steps and walls, making it one of the largest corpus of surviving Greek inscriptions.
Numerous monuments were constructed during the Roman Period, and recent excavations have revealed that the sanctuary underwent significant modifications during the first half of the 2nd century AD. Hadrian played a vital role in restoring and completing the temple. A fragmented dedication of the temple of Apollo mentions Hadrian as the dedicator. The emperor visited Ionia in AD 124 and 129. The decision to complete the temple at Claros was likely taken during one of these visits, while the terminus post quem for the completion of the temple is December 135. Hadrian is known to have supported oracles, and during his reign, Delphi saw a short-lived revival via his patronage. Hadrian’s visit to Claros suggests his profound interest in religious and cultural sites, and he likely participated in rituals, made offerings, and sought advice from Apollo’s oracle.
The eponymous prytanis (local magistrate) of Colophon was responsible for the efficient functioning of the shrine and simultaneously served as the eponymous official of Claros. Two inscriptions evidence that Hadrian agreed to be the eponymous prytanis. Lucius Aelius Caesar, Hadrian’s first adopted son, also held the prytany.
Claros gained increased prominence after the Antonine Plague of AD 165-180 when many eastern cities consulted the oracle in response to the disease. The oracle must have been closed, along with the other Greek oracles, in AD 395, when the emperor Theodosius banned its operation. Later, a strong earthquake destroyed the temple and the remaining buildings.
The sanctuary was discovered in 1907 by a German scholar named C. Schuchhard. Excavations started in the 1950s under the direction of Louis Robert, who uncovered the oracular chamber below the temple and several inscriptions related to its operation. Today, the ruins of Claros offer a glimpse into the religious practices and beliefs of the ancient world, preserving the legacy of this once-thriving sanctuary dedicated to the god Apollo. Above the ground, one can see the foundations of the temple and fragments of the colossal sculptures of a seated Apollo, accompanied by Leto and Artemis, which were over seven meters in height.
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