As far as is known, there were few freestanding monumental statues at Persepolis. Sculpture in the round was mainly used in connection with or attached to architecture-for instance, the guardian bulls of the Throne Hall, the double-headed bull capital, or the entrance sculptures of mastiffs. A few small sculptures were found, however; a unique bronze pedestal of three lions from the Treasury, probably used to support the legs of a throne, and a few small bronze figurines and a baked clay head of a Persian. In addition, there were also sculptural ornamentations — winged griffins, swans, and lions applied to metal vases and stone trays.