My first postcard from Mexico comes from Maggie. It shows the historic center in Mexico City. It shows Zocalo at the top, which is at the heart of the historic center. Zocalo is 240m X 240m, or 57 600 square meters, making it the largest city square in the world. The Zocalo is such an international symbol of the country, that I cannot help but recognise it whenever I see it as being Mexican but I have to say that I have never known what the name of the place was. Templo Mayor, also shown here, was an Aztec temple that was built in the period after 1325. It was one of the main temples in the Aztec capital of Tenochtitlan. It was destroyed and rebuilt no less than 6 times! It was destroyed one last time in 1521 by the Spanish and in 1987 it gained UNESCO World Heritage Site status. The national palace is also located on the Zocalo and this 200 meter-long building is the seat of the federal executive of Mexico. Clearly the historic center in Mexico city could very easily live up to its name. Thanks a lot Maggie!