3D visualization in Unreal Engine encompasses the interactive exploration and presentation of three-dimensional environments, objects, or concepts. It enables users to immerse themselves in virtual spaces, interact with objects, and experience scenarios with depth and realism. This technology is widely used in industries such as architecture, engineering, and education for prototyping, training simulations, and virtual tours. Unreal Engine's capabilities in real-time rendering and physics simulation enhance the fidelity and interactivity of 3D visualizations, making it a versatile tool for creative and professional applications.