"Qua vicina pluit Vipsanis porta columnis,
Et madet assiduo lubricus imbre lapis,
In jugulum pueri, qui roscida templa subibat,
Decidit hiberno prægravis unda gelu."
Martial, iv. Ep. 18.

Near this aqueduct was a temple of Juturna;

"Te quoque lux eadem, Turni soror, æde recepit;
Hic ubi Virginea campus obitur aqua."
Ovid, Fast. i. 463.

and another of Isis.

"A Meroë portabit aquas, ut spargat in æde
Isidis, antiquo quæ proxima surgit ovili."
Juvenal, Sat. vi. 528.

These were followed by the erection of the Temple of Neptune—by some ascribed to Agrippa, who is said to have built it in honour of his naval victories, by others to the time of the Antonines; by the great Imperial Mausoleum, then far out in the country; and by the Baths of Nero, on the site now occupied by S. Luigi and the neighbouring buildings.

" ... Quid Nerone pejus?
Quid thermis melius Neronianis?"
Martial, vii. Ep. 33.

" ... Fas sit componere magnis
Parva, Neronea nec qui modo totus in unda
Hic iterum sudare negat."
Statius, Silv. i. 5.

Besides these were an Arch of Tiberius, erected by Claudius; a Temple of Hadrian and Basilica of Matidia, built by Antoninus Pius, in honour of his predecessors; the Temple and Arch of Marcus Aurelius, near the site of the present Palazzo Chigi; and an Arch of Gratian, Valentinian II., and Theodosius.