The Heraklio station is an ISAP

ISAP

I.S.A.P. is the acronym for the Athens-Piraeus Electric Railways , the oldest urban rapid transit system of Athens metropolitan area in Greece. It is the second-oldest underground metro system in the world, after the Metropolitan Railway, of 1863, now a part of the London Underground...

 train station in Irakleio, Attica

Irakleio, Attica

Irakleio is a suburb in the northern part of Athens, Greece, and a municipality of the Attica region. Irakleio is divided into three parts, Palaio Irakleio, Neo Irakleio and Ano Irakleio. The name dates back to ancient times. The name during the Ottoman Empire until the Greek War of...

, Greece

Greece

Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

, a suburb to the north of Athens

Athens

Athens , is the capital and largest city of Greece. Athens dominates the Attica region and is one of the world's oldest cities, as its recorded history spans around 3,400 years. Classical Athens was a powerful city-state...

. It is marked at the 19,246 km from the starting point in Piraeus

Piraeus

Piraeus is a city in the region of Attica, Greece. Piraeus is located within the Athens Urban Area, 12 km southwest from its city center , and lies along the east coast of the Saronic Gulf....

.

Initially the station served the Athens–Lavrion Railway

Athens–Lavrion Railway

Athens–Lavrion Railway was a railway line connecting downtown Athens with Eastern Attica and the mining town of Lavrion in Greece.-Attica Railways :...

 and Lavrion Square-Strofyli railway, ran by the Attica Railways

Attica Railways

Attica Railways was a railway company which operated a metre gauge railway system in Attica, Greece.The contract between the Greek government and the Hellenic Company of Lavrion Metallurgies was signed in 1882...

. From 1929 the Lavrion branch was operated by Piraeus, Athens and Peloponnese Railways

Piraeus, Athens and Peloponnese Railways

Piraeus, Athens and Peloponnese Railways or SPAP was a Greek railway company founded in 1882, which owned and operated the line connecting Piraeus and Athens to Peloponnese. The company was nationalized in 1954 and absorbed by the Hellenic State Railways in 1962.-History:The first line section...

. The station was closed in 1938 for Kifissia traffic but remained open for Lavrion trains until 1957/1962. At the same location, the present station of EIS was opened on March 4, 1957, using the same name. It was the northernmost terminus of EIS until Kifissia station was reopenned on August 10, 1958. The station has two passenger platforms and a reversing siding.