 By the year 438, the sculptural decoration of the Doric metopes on the frieze above the exterior colonnade, and of the Ionic frieze around the upper portion of the walls of the cella, had been completed.In the "opisthodomos" (the back room of the cella) were stored the monetary contributions of the Delian League, of which Athens was the leading member.Only a very small number of the sculptures remain "in situ"; most of the surviving sculptures are today (controversially) in the British Museum in London (as with the Parthenon Marbles) and the Acropolis Museum in Athens, with a few pieces in the Louvre, National Museum of Denmark, and museums in Rome, Vienna, and Palermo.