Toy train track segments of non-magnetic metals and a toy train track comprised of the non-magnetic track segments and a system of magnetic elements configured to be magnetically inter-connected with each other in varying positions and configurations for building up of environmental structures for a train track layout The toy track segments are configured for magnetic coupling with each other to provide the toy train track, with each segment having at least one edge for abutted coupling to an edge of another track segment wherein each abutted edge has at least one magnet imbedded therein and the imbedded magnet or magnets being positioned to be aligned with a magnet or magnets of another abutted edge to effect the magnetic coupling. The environmental magnetic elements include imbedded magnets around the peripheries thereof or at designated points of magnetic attachment.