The newlywed attorney, who has officially taken her husband George's surname, is in Athens to discuss her latest case.
The case centers on one of the world's longest-running cultural property disputes: a collection of classical Greek marble sculptures variously known as the Parthenon Marbles or the Elgin Marbles.
"Half of the marbles are in the Acropolis Museum in Athens and the other half in the British Museum," Geoffrey Robertson, the human rights attorney leading the legal team in the case, tells PEOPLE exclusively. "They must be brought together because they are unique pieces of evidence about the beginnings of human civilization, and it is imperative that they be reunited under the Greek sky, not the sterile light of the British Museum."
The marbles include about 246 feet of friezes depicting ancient Greek mythological scenes and 17 statues. They long adorned the Parthenon, built in honor of the goddess Athena, but since then have been revered as an enduring symbol of democracy and Western civilization.
"They are a snapshot of civilization 2,500 years ago, not of Greek society today," said Robertson, declining to elaborate on the course of action the Greeks are gearing to take and the role Clooney will have in the case.
Clooney, 36, is part of a delegation from her London-based firm, Doughty Street Chambers, meeting with Greek officials to discuss the country's long-running bid to win back the sculptures from the British Museum in London.
After touching down in Athens on Monday to widespread media excitement – local television crews lined up for hours in anticipation of her arrival – Clooney and her firm's boss, Geoffrey Robertson, met with Greece's minister of culture and sports, Konstantinos Tasoulas, on Tuesday. The group attended a working lunch at a scenic seafood tavern south of Athens.
Clooney is expected to continue talks with Greek officials throughout the week.
Reporting by ANTHEE CARASSAVA