I have been working with Babylonjs for about 2 months now. I love the framework and I have tried to put up a BIM model into a Website. You can see it here:
The building model was created in Autodesk Revit. I exported an FBX and then optimized the mesh, uv unwrap, materials, animations etc done in Blender. Blender 2.8 has an inbuilt glTF exporter which I have used.
Other assets are from various sources I found on the internet.
Thanks to the Babylonjs forum members for helping clear my doubts along the way.
Hope you like.