Mexico City Metro Line 2, the blue line, runs from northwest to east and then south. It's a big "7" shape as the illustration shows. The first length is underground, but it comes to the surface at San Antonio Abad. It then runs between the lanes of today's Calzada de Tlalpan, a major avenue, south to Metro Tasqueña.
The line is significant because it follows two of the "calzadas," i.e.; "causeways" that crossed the lake into ancient Mexico-Tenochtitlan. The Calzada Mexico-Tacuba ran to the west. The Calzada de Tlalpan, to the south.
The line began service in 1970 with service from Tasqueña to Pino Suárez. One month later, it was extended west to Tacuba. Finally in 1984, service was extended by two stations from Tacuba to Cuatro Caminos.
40 trains provide service on Metro Line 2. These are NM-02 models. It stands for "Neumático Mexicano 2002." The wagons were manufactured by the Canadian firm, Bombardier, and the Spanish firm, CAF.
For international visitors, Line 2 is especially important for the stations in the City center. But riding from out from the center on Mexico City Metro Line 2 means you're traveling into some of the City's deepest history.
The listings below give you more information about that history, meaning, use, and the significance of the 24 stations you'll pass along the way. You'll also get some information about some of the attractions you'll find near to each station.