The Hall of Sculpture was built in imitation of the interior of the Parthenon, with marble from the same quarry that supplied the marble for the famous Athenian temple. It was intended to house the Carnegie’s collection of plaster casts of famous sculptures, some of which still adorn the balcony, and some of which have been moved to the Hall of Architecture. On the floor below, staff are hanging transparencies from clotheslines. Why? We’ll find out when they’re done.