Granada, Spain
Coming into Granada we used the phone GPS to guide us, but apparently it doesn't recognize the restricted zones in these old cities! We accidentally turned down the wrong way but coincidentally a guy pulled up beside on a motorbike, asked us where we were trying to go, and said "no problem, follow me" and he proceeded to guide us up, around, and through crazy narrow winding streets to within a block of our hotel. Of course then he walks over and asks for 25 euro!...