Four marble maidens from ancient Greece have just gotten a facelift. Using a specially designed laser, conservators have labored since 2011 to strip away the black grime that encrusted the statues. Today the final figure to undergo the treatment is being revealed in all her splendor in the new Acropolis Museum in Athens, which celebrates its fifth anniversary this Friday, June 20.

Sculpted in the late fifth century B.C., the draped figures served as columns for the Erechtheion, one of the temples that stood on the Acropolis, the sacred rocky hill that rises 512 feet (156 meters) above the modern Greek capital.

The maidens, known as the Caryatids, stand more than seven and a half feet tall (2.3 meters).