Interior of the Pantheon

This drawing captures a section of the Pantheon's circular interior, detailing the rhythm of Corinthian columns and the alternating triangular and curved pediments of the wall niches. Above the main entablature, the artist has sketched the lower tiers of the massive coffered dome, using fine cross-hatching to indicate depth and the play of light. The sketch provides a precise view of the classical proportions that defined Roman monumental architecture.

To Renaissance thinkers, the Pantheon was the supreme example of 'sacred geometry,' where the building's height and diameter are perfectly equal, forming a symbolic sphere. This architectural perfection was viewed as a physical manifestation of Neoplatonic ideals regarding the harmony of the cosmos and the divine order of the universe.