St. Andrew church is the biggest orthodox church in Greece  and a very important place for the Christians, since it was the place of Apostle Andrew crucifixion. It was built in the 20th century and next to it is the old church of St. Andrew. You can find it easy since it exists between the two ports of the city of Patra. The closest airport to the city is the Araxos AB. Coordinates are N 38.243315,  E 21.727122 . It is the first of some landmarks of this city I'll share.