Chamartín is an administrative district of Madrid, Spain and consists of the following neighbourhoods: El Viso, La Prosperidad, Ciudad Jardín, Hispanoamérica, Nueva España, and Castilla. From Wikipedia
The intermodal scheme now connects regional rail services from Vigo, Santiago, A Coruña, Gijón, and Oviedo to over 90 international flights via Madrid-Barajas T4.