supposed to occupy the site of the house, some remains of which can be seen in the crypt, in which she was baptized by S. Peter. Only open on January 18. Supposed to have been formerly the site of the Temple of Diana founded by Servius Tullius.
Down the hill, and up the opposite one, leads to the
CHURCH OF S. SABA,
built on the site of the house of Silvia, the mother of Gregory the Great, who used to send every day to her son on the Cœlian a silver basin containing soup. Uninteresting, and only open on the saint's day, December 5.
At the foot of the hill, on the left corner of the two roads, is the
CAVE OF AQUEDUCTS,
a large stone quarry, intersected in all directions by aqueducts. Some of them are cut out of the solid tufa, others built in passages cut through the tufa; some are blocked up with mud deposit, others with stalactite; some run for a considerable distance, others being broken in, in extracting the tufa. They present altogether a curious and interesting study.
Opposite S. Prisca, in the vineyard of Prince Torlonia, are remains of the
WALL OF THE LATINS,
built by the Latins under Ancus Martius, when he added the Aventine to the city.