50th Anniversary of Mexico City Metro

Today’s Doodle celebrates the 50th anniversary of one of the world’s great public transportation systems, the Mexico City Metro. On this day in 1969, the first subway line of the Sistema de Transporte Colectivo began running east and west from Zaragoza to Chapultepec.

Today the Metro’s 12 lines correspond with 12 different colors, as shown in today’s Doodle artwork, with connections to light railways in the south and cable cars in the north, crisscrossing the most populous metropolitan area in the Western Hemisphere and transporting some 5 million passengers every day.

When the idea for the Metro was first proposed in the 1950s, Mexico City’s population was much smaller than it is today, but the bus and tramway system was severely strained. To address the issue, the city government approved the Metro construction plan in 1967, with the 1968 Olympics just around the corner.

It was no small challenge for engineer Bernardo Quintana to tunnel underneath a mega city built over a lake, in an area with a history of seismological activity as well as archaeological riches. Metro construction crews have unearthed some remarkable finds, including an 11,000-year-old mammoth skull, which is now on display at the Talismán station; a circular pyramid dedicated to Ehécatl, the Aztec God of wind, around which the Pino Suárez station was built; and in 2010, a 500-year-old Aztec gravesite.

Each of the 195 Metro stops has its own color and symbol, designed to make the system easy to navigate. La Raza station boasts a 600-meter-long (1969-feet-long) science museum, the Túnel de la Ciencia, stimulating the minds of passengers as they walk between lines 3 and 5. Other stations are designed to resemble the Art Nouveau entrances to the Paris Metro. Rubber wheels on many lines keep noise to a minimum, and the fare to ride can be as low as 5 pesos.