We arrived with a great view of the city. Our excursion was early: first to the Blue Mosque (amazing and beautiful), then we walked to the Topkapi Palace which is now a Museum. Huge! It would take 2 days to really see it all, so we were selective. The palace housed 5000 people in it's day, and had several different areas.
We walked from there to the Grand Bazaar. More huge!
In the evening we enjoyed a dinner cruise on the Bosporus with great entertainment. All in all, a fun time.