Robert Seymour Conway and Thomas Ashby, 1911 Encyclopædia Britannica (1911)
“ The acropolis has only one approach, on the south-east; on all other sides it falls away steeply. Remains of fortifications of all ages run round the edge of the hill; some of the original Greek work, in finely hewn rectangular tufa blocks, exists on the east. The medieval line follows the ancient, except on the N.E., where it takes in a larger area. Within the acropolis stood the temple of Apollo, erected, according to tradition, by Daedalus himself, the remains of which, restored in Roman times, were discovered in 1817, on the eastern and lower summit. ”
