It is not known for certain to whom the temple was dedicated, whether to
Hercules, the protecting god of Tibur, or to Albunea, the
Tiburtine Sibyl, or to Tiburnus, the
eponymous hero of the city, or to Gellia Gens as mausoleum (their villa was up there), or to
Vesta herself, whose more familiar circular peripteral
Temple of Vesta is to be seen in the
Roman Forum. A rectangular temple stands nearby, equally difficult to attribute, often called the Temple of the Sibyl. The name of the builder or restorer of the Temple of Vesta is Lucius Gellius, memorialized in the inscription on the
architrave. The
peripteral temple in a variant of the
Corinthian order surrounds its circular
cella, which is raised on a high brick podium clad in blocks of
travertine: the cella has a door and two windows. The
ambulacrum that surrounds the cella had eighteen Corinthian columns (ten remain standing). The comparatively good condition of the temple is owing to its
Christianization as a church, "Santa Maria della Rotonda". The Christian accretions had already disappeared in the 16th century. Careful measured drawings of the 'Temple of Vesta" were published by
Antoine Desgodetz (1682) who gave
elevation and plan as well as carefully rendered details of the carved capitals and the frieze. in the following century both
Giuseppe Vasi and
Giovanni Battista Piranesi made etchings and engravings of the "Temple of Vesta". == Imitations ==