There were other temples to Hercules in the Forum Boarium, of which we
have some travertine remains behind the Church of S. Maria in Cosmedin
opposite. "The Romans afterwards built a magnificent temple near the
river Tiber, in honour of Hercules, and instituted sacrifices to him
out of the tenths" (Diodorus, iv. 1). "In A.U.C. 534 a supplication
was ordered to be performed by individuals at the Temple of Hercules"
(Livy, xxi. 62). This was destroyed by Pope Adrian I., A.D. 772-795.
"By the infinite labour of the people, employed during a whole year,
Adrian threw down an immense structure of Tiburtine stone to enlarge
the Church of S. Maria in Cosmedin" (Anastasias).