Use of estar and ser

[Desmond]

An online spanish tutorial has The apple is green.
La manzana está verde.
La manzana es verde.
In the second it is the physical characteristic of that type of apple.
If a train station is always going to be in the same place and presumably until it closes down will always be a train station. When giving directions should it not be

Allí es la estación
not
Allí está la estación

[wrholt]

The physical location of an object is always stated using "estar": mobility or immobility is irrelevant.