Metro
Athens & Pireas metro system is now being expanded.
Limited in terms of destinations as the metro is currently, it does manage
to connect Piraeus with downtown Athens and the northern suburb of Kifissia
with some major stops -(such as the one at the Olympic Stadium) on the way.
Trains run every four minutes during rush hours and
no less frequently than every ten minutes at all other times (expect between
midnight and 5:30am, when the metro is closed). Metro tickets are purchased
at the stations and will cost either 0.60 or 0.70 Euro, depending on how far
you are going.