GAIANUM
an open space in
Region XIV (Reg. Cat.; Hemerol. Filoc. ad v
Kal. April., CIL i². p. 314), south of the naumachia Vaticana and east of
the via Triumphalis, where Caligula was fond of having horse races
(Cass.
Dio lix. 14). From inscriptions found in the vicinity (
CIL vi.
10052-4, 10057-8, 10067, 33937, 33953;
BC 1902, 177-185) it appears
to have been surrounded by statues of successful charioteers (HJ 662;
DAP 2. viii. 355-60;
BC 1896, 248-9).