I'm in Campeche.  I'm having breakfast with the owner of the house I'm staying at.  She has dug out maps, history books, and magazines, to show me what I might do while in Campeche.  She is an amazing woman. Originally from Mexico City, she came to Campeche five years ago, fell in love with a house and bought it.  She rents out rooms, to make up for the expenses.   Campeche is the most beautiful city I've seen.  It has a fortress that surrounds it, built hundreds of years ago, as a defense to keep pirates out.  The entire interior of the fortress was named a UNESCO heritage site, almost 20 years ago.  Each building inside the city wall is...