This case study explores the development and implementation of 3DNL, a photorealistic digital twin of the entire Netherlands. This digital twin, based on airborne imagery and LiDAR data, offers a comprehensive and detailed representation of the country's terrain and infrastructure. This digital twin provides a valuable resource for government and commercial users, offering detailed 3D data for a wide range of applications. The project demonstrates the power of innovative technology and collaboration in creating comprehensive and accessible geospatial data sets.