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Railways

Athens is the hub of the country's national railway system (OSE), connecting the capital with major cities across Greece and abroad (Istanbul, Sofia, Belgrade and Bucharest).

The Athens Suburban Railway, referred to as the Proastiakos, connects Athens International Airport to the city of Kiato, 106 km (66 mi) west of Athens, via Larissa station, the city's central rail station and the port of Piraeus. The length of Athens's commuter rail network extends to 120 km (75 mi), and is expected to stretch to 281 km (175 mi) by 2010.

The Athens Metro is operated by STASY S.A. (Greek: ΣΤΑΣΥ) (Statheres Sygkoinonies S.A.), a subsidiary company of OASA (Athens urban transport organisation), which provides public transport throughout the Athens Urban Area. While its main purpose is transport, it also houses Greek artifacts found during the construction of the system. The Athens Metro runs three metro lines, namely Line 1 (Green Line), Line 2 (Red Line) and Line 3 (Blue Line) lines, of which the first was constructed in 1869, and the other two largely during the 1990s, with the initial new sections opened in January 2000. Line 1 mostly runs at ground level and the other two (Line 2 & 3) routes run entirely underground. A fleet of 42 trains, using 252 carriages, operates on the network, with a daily occupancy of 1,353,000 passengers.

Line 1 (Green Line) serves 24 stations, and is the oldest line of the Athens metro network. It runs from Piraeus station to Kifissia station and covers a distance of 25.6 km (15.9 mi). There are transfer connections with the Blue Line 3 at Monastiraki station and with the Red Line 2 at Omonia and Attiki stations. Line 2 (Red Line) runs from Anthoupoli station to Elliniko station and covers a distance of 17.5 km (10.9 mi). The line connects the western suburbs of Athens with the southeast suburbs, passing through the center of Athens. The Red Line has transfer connections with the Green Line 1 at Attiki and Omonia stations. There are also transfer connections with the Blue Line 3 at Syntagma station and with the tram at Syntagma, Syngrou Fix and Neos Kosmos stations. Line 3 (Blue Line) runs from Dimotiko Theatro station, through the central Monastiraki and Syntagma stations to Doukissis Plakentias avenue in the northeastern suburb of Halandri. It then ascends to ground level and continues to Athens International Airport Eleftherios Venizelos using the suburban railway infrastructure, extending its total length to 39 km (24 mi). The spring 2007 extension from Monastiraki westwards to Egaleo connected some of the main night life hubs of the city, namely those of Gazi (Kerameikos station) with Psirri (Monastiraki station) and the city centre (Syntagma station).The new stations Maniatika, Piraeus and Dimotiko Theatro, were completed on 10 October 2022, connecting the biggest port of Greece, the Port of Piraeus, with Athens International Airport, the biggest airport of Greece.

The Athens Tram is operated by STASY S.A. (Statheres Sygkoinonies S.A.), a subsidiary company of Transport for Athens (OASA). It has a fleet of 35 Sirio type vehicles and 25 Alstom Citadis type vehicles which serve 48 stations, employ 345 people with an average daily occupancy of 65,000 passengers. The tram network spans a total length of 27 km (17 mi) and covers ten Athenian suburbs. The network runs from Syntagma Square to the southwestern suburb of Palaio Faliro, where the line splits in two branches; the first runs along the Athens coastline toward the southern suburb of Voula, while the other heads toward Piraeus. The network covers the majority of the Athens coastline.