Heading to Istanbul and Budapest

In just a few days, I'm taking my first trip of 2013. I'm heading to Budapest, Hungary followed by Istanbul, Turkey. The Budapest part of the trip is going to be complete vacation, and I'm really looking forward to exploring the Hungarian capital.

After Hungary, I'll be heading to Istanbul for tourism and to attend the wedding of some friends. Istanbul has long been on my travel bucket-list, and while the rest of Turkey will go unexplored this trip, I should have plenty of time to see and do all that I want to in Istanbul. I'll just have to come back to see the rest of Turkey.

As I've never been to either country or city, I'm very open to suggestions on things to do, places to make sure I see, and of course, food that I have to eat. So speak up and let me know your thoughts!