Tetrapylon was the monumental gateway which greeted pilgrims when they approached the Temple of Aphrodite. The Tetrapylon consisted of four rows of four columns (tetra = four and pylon = gateway in Greek) It connects the major street to the sacred way heading toward the sanctuary of Aphrodite. 

On the pediment over the west columns were decorated with relief figures of Eros and Nike hunting among the acanthus leaves.

Tetrapylon Aphrodisias