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Boniface IV to dedicate the building, in 609 a.d., as a Christian church to the memory of all the martyrs, under the name of S. Maria ad Martyres (now S. Maria
of these in front support a massive pediment, behind which rises another pediment of still higher elevation, resting against the square projection which connects the
(1) THE PANTHEON, HOME.
Botonda, or simply La Rotonda). The building had already been repeatedly restored in ancient times by Domitian, Hadrian, and last of all, in 202 a.d., by
portico with the dome. The other columns divide the portico into three parallel portions, originally vaulted over. In the interior of the portico on each side of the
(2) THE PANTHEON) KOME. (Longitudinal Bection.)
Septlmius Severus and Caracalla. It consists of a circular structure, 142 feet 6 inches in height and inner diameter, with a portico 103 feet long formed by sixteen Corinthian columns 47 feet high. Eight
entrance are two niches, which formerly contained colossal statues of Augustus and Agrippa. The massive walls of the great rotunda, which is completely circular in form, are divided by ring-cornices into two