Culture Minister Lina Mendoni led a ceremony Friday for the repatriation of three sculpture fragments — representing a horse and two male heads — from the Parthenon temple on the Acropolis which had been kept at the Vatican Museums.

“Initiatives like these show the way, how the pieces of the Parthenon can be reunited, healing the wounds caused by barbaric hands so many years ago,” Mendoni said.

“This takes us to the just and moral demand of the entire Greek people, and of this government and its prime minister, for the final return of all the sculptures of the Parthenon.”

The fragments will be added to the collection at the Acropolis Museum, which opened in 2009 at the foot of the ancient site in the center of the Greek capital.

The Vatican called the return an ecumenical “donation” to Greece’s Orthodox Church, but the gesture added pressure on the London museum to reach a settlement with Greece following a campaign launched by Athens 40 years ago.

“This act by Pope Francis is of historical significance and has a positive impact on all levels … We hope it sets an example for others,” the leader of Greece’s Orthodox Church, Archbishop Ieronymos II, said.

Greece argues that the Parthenon sculptures are at the core of its ancient heritage, while supporters of the British Museum maintain that their return could undermine museum collections and cultural diversity globally.

Carved in the 5th century BC, the sculptures from the Parthenon were taken in the early 19th century by British diplomat Lord Elgin before Greece won independence from the Ottoman Empire.

Culture Ministry officials in Greece have played down remarks made last month by British Museum chair George Osborne that the U.K. and Greece were working on an arrangement to display the Parthenon Marbles in both London and Athens.