"The temple facade consists of two pairs of columns which frame the arched entrance to the porch; the architrave is decorated with an interesting relief in which the central figure, forming the keystone of the arch, is a bust of Tyche, the goddess of fortune and protectress of the city. This is one of the earliest example of an arch supported on columns rather than piers, an amalgamation of Greek and Roman architectural forms that led directly into Romanesque architecture."
--J. Freely. (1990) Classical Turkey. Viking, Britain.