Hi, I'm hoping to find two couples who would like to take a private tour of Berlin. "A friend in Berlin" looks like a good resource. I'm an architect and would like to see the architectural highlights as well as museums and historical sites. Any interest? There's a great article about Berlin in Continental's inflight magazine this month. We're from Houston and have sailed on the Constellation before. It's a great ship, in my opinion, with excellent staff and very good food.