Seen from higher, the
temple of Isis and Serapis
is tightly leaning against the great portico of Maleagre of the Sæpta Julia,
on the right of the picture. This cult has been introduced into Rome since
the IInd century and grows continuously despite the Senate’s edicts.
In 58, 53, 50, 48 BC, its chapels and statues are destroyed, but in 43,
after Cæsar’s death, the triumvirs accept it officially and have a temple
erected on the State’s expenses. The last official resistance against
the cult is dating to Tiberius. Caligula
lets build this temple on the Campus
Martius, the great temple of Isis Campensis.