The Santiago Metro is the underground railway network serving the city of Santiago, Chile. This network is one of the most modern in Latin America, being the second largest following the Mexico City Metro, and it is 7th in frequency worldwide. It currently has five lines, 108 stations, and of revenue route. This service is administered by the state-owned Metro S.A. and is the first of three urban railway systems in Chile, along with the Biotrén of Concepción (1999) and Merval of Valparaíso (2005).