Welcome to Athens! With an urban population of more than 4 million people, Athens is the capital of Greece and the 4th most populous capital in the E.U. with a large, modern mass transit system to serve the needs of residents and visitors. It consists of:
- City buses
- Electric trolley-buses
- Athens Metro
- Athens Tram, and
- Athens Suburban railway.
Athens is connected to even the remotest destinations through the Athens International Airport, ports of Piraeus, Rafina and Lavrio, national railway network operated by TRAINOSE and, long-distance bus network KTEL.
source/read more: http://athenstransport.com/english/