1)At home you should choose the things,that are is really interesting for you. If you have enough time after you see them, you can visit others. You also should choose things that are close to your hotel.
2) You should make a list of things you really need to do. Then you can decide what do to according to your mood.
3)At first you should call your parents that you got lost. Then open a map and tell your parents where you are. They will help you. If you got lost with your parents and you can't open a map, ask a stranger or (it's even better) a policeman to help you find the way.