Split-Era Urban Diorama Generation Prompt for Nano Banana Pro

This is a highly detailed, multi-section system instruction designed for the Nano Banana Pro model to generate a photorealistic, isometric macro render of a split-era urban diorama. The prompt focuses on achieving Historical and Municipal Accuracy by contrasting two different time periods within the same city block, specifically detailing architectural styles, urban clutter, lighting, and composition for a realistic comparison.