3D scanning buildings uses laser-scanning technology to capture detailed and accurate representations of the interior and exterior of a structure. This process entails positioning a 3D laser scanner at various locations within and outside the building, emitting laser beams to measure distances and creating a dense point cloud of 3D coordinates. Multiple scans are typically required to cover the entire building. After data acquisition, the scans are registered, aligned, and processed to create a seamless 3D representation of the building. This technology is widely used in architecture, construction, historical preservation, and facility management.