Are considered a very perfect specimen of Roman architecture. The form
is parallelogram, about 220 feet long, and about 130 broad; three of its
sides consist of massive walls, 6 feet thick, and 17 in height; the
fourth is open to the harbour, having only a low parapet laid on the
precipitous cliffs. At the north-east angle is a circular bastion tower;
and along the walls are two rows of circular holes, four inches in
diameter, having the inside smoothly plastered. The cement, mixed with
coarse pebbles, is extremely hard, and this, in conjunction with other
circumstances, exhibits ancient marks of Roman masonry. The Church,
altogether, will repay the time spent in its examination.