There is an information centre in the square. If the hotel does not provide a map, you can use Euro 1 to buy a more comprehensive map at the information centre. There are different shops and scenic spots along several streets in different directions of the square. One leads to Ding Ding's wall, the other is a place where all chocolates are sold. Our local Belgian friends told us to buy Galler, Neuhaus, Cote D or instead of leonidas. I prefer Neuhaus to my own taste. Truffle chocolate is recommended.