At the crux of the major axes of the city, the Arch of Galerius emphasized the power of the emperor and linked the monumental structures with the fabric of 4th-century Thessaloniki. The arch was composed of a masonry core faced with marble sculptural panels celebrating a victory over Narses (Narseh), the seventh emperor in the Sassanid Persian Empire, in 299 AD. About two-thirds of the arch is preserved.