Source : Webster's Revised Unabridged Dictionary (1913)

Elgin marbles \El"gin mar"bles\
   Greek sculptures in the British Museum. They were obtained at
   Athens, about 1811, by Lord Elgin.

Source : WordNet®

Elgin Marbles
     n : a collection of classical Greek marble sculptures and
         fragments of architecture created by Phidias; chiefly
         from the Parthenon in Athens