Attiki Odos is a privately owned toll motorway system in Greece. The Attiki Odos motorways form the outer beltways of the Greater Athens metropolitan area. The total length of the motorways is 70 kilometres (43 mi). The Attiki Odos system consists of the following motorways:A6: Eleusis - Athens International Airport A61: Markopoulo - Lavrio (planned) A62: Koropi - Athens International Airport A63: Ilioupoli - Paiania (planned) A64 : Katechaki Avenue - Pallini A65 : Skaramagas - Ano Liosia A642: Doukissis Plakentias Avenue - Agia Paraskevi

Lavrio, Lavrion or Laurium is a town in southeastern part of Attica, Greece. It is part of Athens metropolitan area and the seat of the municipality of Lavreotiki. Laurium was famous in Classical antiquity for its silver mines, which was one of the chief sources of revenue of the Athenian state. The metallic silver was mainly used for coinage. The Archaeological Museum of Lavrion shows much of the story of these mines.