Station building
A station building, also known as a head house, is the main building of a passenger railway station. It is typically used principally to provide services to passengers.
A station building is not to be confused with the station itself. Whereas the latter is the whole facility giving passenger access to trains at a particular location (and includes the tracks, platforms, and often also, e.g., a subway, train shed, etc.), a station building is a specific well-defined element of the station of which it forms part.