Iconography of the present state of the Pantheon 

This detailed architectural drawing by Italian artist Giovanni Battista Piranesi, known for his dramatic etchings of Roman antiquities, depicts the Pantheon in Rome. This plan view reveals the precise measurements and arrangement of the building's interior, highlighting the intricate geometry of its design. Piranesi's meticulous approach exemplifies the 18th-century fascination with classical architecture and its influence on contemporary design. The drawing showcases the Pantheon's circular floor plan, the dome's construction, and the surrounding portico, contributing to the understanding of its grandeur and architectural ingenuity.