Green Bay on Mars Hill

My pal Bryan is on a trip (for his doctoral work) touring the journeys of the late, great Apostle Paul. During the trip he will see places like Corinth, Ephesus, Patmos, Rhodes, and Crete. He sent the above picture. He traveled several hundred miles to a beautiful location and sent a picture of him standing in front of Mars Hill donning a Green Bay Packers hat.

Why? Why?