ATHENS—After a series of delays, the New Acropolis Museum in Athens will open in September, finally displaying the Parthenon, or Elgin, Marbles, reports the Art Newspaper. Since the British Museum retains various pieces of the marbles, the new Athens museum will show the patina-coated originals alongside lighter-colored plaster casts of the pieces removed from Greece.

While there are no plans to reunite the pieces in Britain and Greece, Stelios Haji-Ioannou, owner of EasyJet Airline, has launched an advertising campaign in the U.K., calling on curators at the British Museum and the New Acropolis Museum to engage in “a constructive dialogue” about the marbles.

Construction of the New Acropolis Museum began in 2000, following a design competition won by New York architect Barnard Tschumi. The museum was scheduled to open in time for the Athens Olympics in August 2004, but archaeological discoveries on the site and other problems led to a series of further delays.