Although Alpharetta is not a particularly big city now, experts predict that in about 25 years, Alpharetta will be the geographical center of metro Atlanta, as the area continues to expand North. After driving past many empty fields, or wooded areas, you might find it hard to believe that Alpharetta will really become such a major city. What you probably don't know is that much of Alpharetta's empty land is owned by some of the biggest names in the nation.