||This drawing shows the southern part of the Pantheon, with the so-called
chamber system and the ancient inner wall of the south building now
creating the back wall of the Pantheon. The whole system is today
used as a part of the Pantheon and gives the impression that this
complex could have had the same function in antiquity (cf. fig. 7).
However, in reality the chambers were originally a completely independent
part, which was not connected with doorways to the Pantheon like
at present. In antiquity only passages between the chambers and the
cavities existed; all connections to the interior of the rotunda
were installed later on. The chambers were only added on to the Pantheon
(fig. 83), and are not connected with it or with the south building.
The two doors on the western and eastern side walls of the chamber
system are original. Alleys inside the complex are very narrow (fig.
84); therefore, the chambers could not have been used by the public.
Of the south building only the former northern wall is still visible
(fig. 82). It consists of a central apse that is nearly the same
size as the main apse inside the Pantheon; this central apse is flanked
by three niches on each side. Four columns, today partly reconstructed,
originally stood in front of this wall. The building was part of
a large hall that was erected between the Pantheon and the Baths
of Agrippa. This complex was possibly the former Basilica of Neptune
or in later times the Library of Pantheon, which has only come down
to us in literary sources. A three-dimensional view gives an idea
of the different volumes inside the chamber system (cf. fig. 94)
||Project, The Bern Digital Pantheon
||Graßhoff, Gerd and Wäfler, Markus and Albers, Jon and Berndt, Christian
||Medium Plan Building Interior Chambers
||Digital Repository of the Bern Digital Pantheon Project
||Elevation map and floor plan showing the south building, chambers
and the back of the rotunda, AutoCAD vector graphic created from