The architectural design is nondescript, corresponding to no recognised style, unless it be a bastard Roman Doric.

There is absolutely no decorative element except four shallow masks beneath the abaci of the pilasters.

All is cold and broad and dry, contrasting strangely with the accumulated details of the lower portion.

In the central niche, immediately above the Moses, stands a Madonna of fine sculptural quality, beneath a shallow arch, which repeats the shell-pattern.

At her feet lies the extended figure of Pope Julius II., crowned with the tiara, raising himself in a half-recumbent attitude upon his right arm.
Of the statues in the upper portion, by far the finest in artistic merit is the Madonna.