The Medellín Metro (Spanish: "Metro de Medellín") is a rapid transit system that crosses the Metropolitan Area of Medellín from North to South and from Centre to West. It first opened for service on 30 November 1995. As one of the first implementations of modern mass transportation in Colombia and the only metro system in the country, the Medellín Metro is a product of the urban planning of the Antioquia department of Colombia. It is part of the Aburrá Valley Integrated Transport System ("Sistema Integrado de Transporte del Valle de Aburrá", SITVA).