As someone who loves to travel (but does not really have that much resources to spare, i.e. money), I always try to look for discounted/free stuff when traveling. Yes, I do love piso fares and all that. So when we had a chance to travel to the US for work, we did some research on cheap travel routes and stopovers we can afford. My workmates found that Turkish Air offered the lowest fare that time and luck enough, we found out that they offered free tours in Istanbul!