Refers to a location, often associated with the Atocha train station in Madrid.
La estación de Atocha es un punto clave para los viajeros en Madrid.
The Atocha station is a key point for travelers in Madrid.
El tren a Atocha saldrá en diez minutos, así que apresúrate.
The train to Atocha will leave in ten minutes, so hurry up.