The history of Greece can be traced to the Minoans almost five thousand years ago. And this presents problems for all sorts of infrastructure improvements in the cities. Everywhere they try to put in a new Metro line or construct a new building, they find ruins of structures from long ago, mosaics and/or pottery or grave goods. Everything stops while the archeologists document the site. But still, these ancient sites attract tourists from all over the world. And I do mean the entire world. On my way to the Acropolis the first morning hundreds of passengers from three cruise ships joined us. By late morning maintaining a safe distance between…