Hi @Darcey, welcome to the BabylonJS forum... good to have you with us.  Nice looking scene... I like it. Actually, spotlight beams travel through everything... unless... they hit a mesh which has been included in the renderlist of a shadowGenerator assigned to THAT light. At least I think that is correct.  I believe the same is true for two other types of lights which can produce shadows... the pointLight and the directionalLight.  I don't think the hemisphericLight (often aimed