Possible Clues:

• How associate starts generating capital
• Location of the Parthenon
• Home of the Acropolis and the Parthenon
• By legend, the first 12 ended here
• City which hosted the 2004 summer Olympics
• Capital in Yugoslavia, then Serbia?
• Capital city home to the Acropolis Museum
• Capital in those days invested in arsenic
• Hasten to change capital
• Capital of Greece, or a three-word hint to the answers to the starred clues