The tropaeum was designed as an open-air sanctuary, structured on two terraces supported by
retaining walls facing southwards. The lower terrace was supported by the first
retaining wall made of
opus caementicium. Above the lower terrace stood the second
retaining wall made of
limestone blocks, on which the
bronze rams from Antony and Cleopatra's defeated fleet were prominently displayed. Measuring approximately 63 meters in length and about 7.3 m in height, the wall bent northwards at both ends towards the hill to support the rectangular upper platform. The platform contained a square court (
peristyle) 38 m in width and length, surrounded on three sides by a Π-shaped
stoa, leaving the south side open. The court featured an altar at the center and probably three statues. The rams were supported by rectangular stone
pedestals positioned on the lower terrace about one meter from the second retaining wall. Above the rams, there was a
Latin inscription on the retaining wall, celebrating
Augustus' triumph and dedicating the monument to
Neptune and
Mars:Imperator Caesar, son of the Divus Julius, victor in the war which he waged on behalf of the
res publica in this region, when he was consul for the fifth time and imperator for the seventh, after peace had been secured on land and sea, consecrated to Mars and Neptune the camp from which he set forth to attack the enemy, now ornamented with naval spoils. The text confirmed that the structure was erected shortly after the closing of the
Temple of Janus in 29 BC and prior to
Octavian officially adopting the imperial title of 'Augustus' in 27 BC. Thirty-three fragments of the inscription blocks were uncovered during excavations, though ten of them were lost probably during the Second World War.
Central altar The upper terrace above the retaining wall was enclosed by a Π-shaped
stoa on the northern, western, and eastern sides, which created a sacred courtyard. At its center was the main altar dedicated to
Apollo, a large rectangular platform (22 x 6.5 m) made of
sandstone that aligned with the monument's central axis. The altar was decorated with
relief, of which 1129 sculpted fragments have been recovered. They depicted symbolic and mythological scenes, emphasizing
Augustus' military victory and the divine legitimacy of his rule. Notable relief themes included: •
Naval motifs: Ships and ship accessories such as steering oars and warship bows. They referred to the naval
Battle of Actium and symbolized the naval victory. •
Amazonomachy: Possible depictions of
Amazon warriors appeared on the altar relief as well as other parts of the tropaeum, possibly symbolizing the conflict between Rome and
Antony's eastern allies. •
Weapons and trophies: Shields, helmets, spears, etc. hanging on tree trunks or arranged in piles, symbolizing victory. •
Triumphal procession: A scene of procession, which had multiple similarities with the procession scene on the
Ara Pacis at Rome, is believed to represent one of
Augustus'
triumphs. == References ==