Mount Parnitha is a densely forested mountain range north of Athens, the highest on the peninsula of Attica, with an elevation of 1,413 m, and a summit known as Karavola (Καραβόλα). Much of the mountain is designated a national park, and is a protected habitat for wildfowl, first created in 1961. The summit is located 18 km north of Acharnes and about 30 km north of the Athens city center. The mountain covers approximately 250 km² of land. Other peaks include Mavrovouni (Μαυροβούνι), Ornio, Area, Avgo or Avgho, and Xerovouni. It also has two shelters Mpafi and Flampouri. The name of the mountain dates back to ancient times, when it was under the ancient demes of Acharnae and Decelea.

Athens is the capital and largest city of Greece. A major coastal urban area in the Mediterranean, Athens is also the capital of the Attica region and is the southernmost capital on the European mainland. With its urban area's population numbering over three million, it is the eighth largest urban area in the European Union. The Municipality of Athens, which constitutes a small administrative unit of the entire urban area, had a population of 643,452 (2021) within its official limits, and a land area of 38.96 km2 (15.04 sq mi).