We are present this High-Rise Tower Project, developed and validated through advanced 4D BIM Simulation at LOD 500, demonstrating complete lifecycle integration from construction sequencing to final as-built Digital Twin delivery. The project showcases a complex architectural form featuring a dynamic façade system and an iconic sky-bridge connection, fully coordinated within a dense urban environment. At LOD 500, the model reflects fully verified and field-validated geometry with accurate dimensions and installed system information. Every structural element—including columns, core walls, slabs, transfer structures, and façade systems—was modeled according to final site execution conditions. The glazing panels, external bracing, and façade components were digitally documented to match real-world installation, ensuring precision and reliability in as-built data. Through detailed 4D simulation, the construction schedule was seamlessly integrated with the 3D BIM model to visualize stage-wise development. This included crane positioning, floor-by-floor erection planning, sky-bridge installation strategy, and façade sequencing. The time-linked model enabled proactive clash detection, improved coordination between architectural, structural, and MEP disciplines, and optimized resource allocation. It also helped identify potential logistical challenges within the surrounding cityscape, reducing risks and minimizing on-site delays. This LOD 500 4D BIM workflow resulted in a fully coordinated and construction-validated Digital Twin, ensuring accurate project documentation, enhanced stakeholder communication, and readiness for facility management and long-term operational efficiency. Our team remains committed to delivering high-quality BIM solutions with precision, timely execution, and professional standards, supporting clients with reliable and innovative digital construction methodologies.