A native 3D viewer inside the tour should let users open 3D assets directly within the interface, rotate them freely, zoom in, inspect details, and close the viewer without leaving the environment. The module should run as an overlay or panel to preserve spatial context.

The spectrum of use cases is broad: architectural details visualized as standalone models, museum artifacts shown in full 360° inspection, engineering components presented with precise geometry, historical reconstructions as individual 3D objects, or product models embedded for commercial tours.