Piraeus an integral part of the Greek capital. The port of Piraeus is now an important international port, and the largest in the country. Piraeus is situated in the southwest part of the central plain of Attica, also widely known as the "Athens or Attica Basin", which the Athens agglomeration (urban area) sprawls across. Piraeus is bounded by the Mount Aigaleo to the northwest, and the Saronic Gulf to the south and west, and connected with the rest of the Athens Urban Area to the east and northeast. The "city proper" of Piraeus consists of a rocky peninsula, originally an island,
Piraeus-Perama light railway at Methonis street, allowing freight trains to access Keratsini Port. At Keratsini a short branch was constructed leading to one of the jetties. Due to serious damages on infrastructure and rolling stock caused by Allied bombing of Piraeus on 11 January 1944 the line paused service until April 1945. Most of its time the line was exploited with two kind of regular services: one full length service from Piraeus to the Naval Base, running every 15 minutes with two car formation of the rolling stock (line number 4) and in between, 7,5 minutes after, a short service from Piraeus to