On the picture: Some sculpted stone blocks from the Western City Gate.
The gate was constructed for Hadrian in 129 AD (when he visited Asia Minor), and after a victory in 200 AD it was rearranged as an arch of triumph.
Monumental gates in Roman cities, especially in colonies were built as victory arches to symbolise the military power of Roman authority. The main gate in Pisidia Antiocheia, decorated with Nikes, weapons, armour, bucrania (skulls of an ox) and garlands is a perfect example of this tradition.

Correspondent: J.M.Criel, Antwerpen.
Sources: ‘Pisidian Antioch’ – Ünal Demirer, archaeologist. (Ankara, 1997), Wikipedia
& Personal visits (1994 – 2003).