40 Greek Architecture. remained almost intact for many centuries, until they were destroyed by the Venetians in 1G87 : two mutilated ruins are all that now remain of this magnificent structure. Ictinus and Callicrates were the architects, and Pheidias and his pupils are supposed to have executed the sculptures, many of which have been removed to the British Museum. Although they are so broken as to be little better than Fig. 21. — The Temple of Theseus at Athens. relics, they are universally acknowledged to be among the most beautiful works of sculpture ever produced. Not less famous than the Parthenon itself is that magnificent Porch, the Propylsea, built of white marble, which formed the entrance to the temple on the western side of the Acropolis. It belongs to the same age as the
