Outside

Ideally Chanukah candles are meant to be placed outside of the home, by the street. This is an allusion to the fact that the light of the spirituality of the Torah is so great that even when one leaves the protective cocoon of the home, and wanders out into a dark world full of temptations and challenges to one's belief system, the light can still win out. Even those who are found in places devoid of all Jewish Spirituality can be brought back by the light of the Chanukah candles.