The 3D model NFT would be an awe-inspiring representation of an architectural marvel, meticulously sculpted to showcase a futuristic building. It would boast intricate details and carefully etched lines, mimicking the elegance and complexity of real-world architecture. The model would exude a sense of grandeur and innovation, with its soaring spires, sleek facades, and captivating geometric patterns. Every minute aspect of this digital marvel would be visually captivating, from the intricately designed windows to the boldly delineated entrances. The CAD diagram incorporated into the model would enhance its authenticity, providing a glimpse into the meticulous planning and engineering behind the creation. This NFT would truly be a masterpiece, captivating viewers with its sheer beauty and serving as a testament to the harmonious blend of technology and design in modern architecture.