Thriasio Plain in the context of "Parnitha"

Elefsina (Greek: Ελευσίνα, romanized: Elefsína) or Eleusis (/ɛˈljuːsɪs/ eh-LEW-siss; Ancient Greek: Ἐλευσίς, romanized: Eleusís) is a suburban city and municipality in Athens metropolitan area. It belongs to West Attica regional unit of Greece. It is located in the Thriasio Plain, at the northernmost end of the Saronic Gulf. North of Elefsina are Mandra and Magoula, while Aspropyrgos is to the northeast.

It is the site of the Eleusinian Mysteries and the birthplace of Aeschylus. Today, Elefsina is a major industrial centre, with the largest oil refinery in Greece as well as the home of the Aeschylia Festival, the longest-lived arts event in the Attica Region. On 11 November 2016, Elefsina was named the European Capital of Culture for 2021, which became effective in 2023 due to the COVID-19 pandemic postponement.

Magoula (Greek: Μαγούλα) is a suburban town of Athens and former community (pop. 4,992 in 2011) of West Attica, located in the Thriasio Plain. Since the 2011 local government reform, it is part of the municipality Elefsina, of which it is a municipal unit. The municipal unit has an area of 18.134 km.

Magoula is located 2 km east of Mandra, 5 km north of Elefsina and 21 km northwest of central Athens. The municipal unit of Magoúla also includes the village of Néos Póntos. Magoula is served by a station on the Athens Airport–Patras railway. The A6 motorway runs southeast of the town.

Aspropyrgos (Greek: Ασπρόπυργος, pronounced [aˈspropiɾɣos]) is a western suburb, in the Athens metropolitan area and a municipality in the West Attica regional unit in the Thriasio Plain, Attica, Greece. The municipality had a population of 31,381 at the 2021 census. It has an area of 101.983 km.