Mexico City (photos) is often referred to as the DF, which stands for Districto Federal. This is because, until fairly recently, Mexico City was governed by the federal government of Mexico, similar to our own Washington, DC. Finally, in 1997, Mexico City gained political autonomy. Today, Mexico City and the surrounding metropolitan area claims 21 million inhabitants, about one fifth of the total population of the country. I’ll try to pick some of the highlights of our visit to the DF.