The gondola is certainly the most photographed craft in the world and its image has become, for millions of tourists, the symbol itself of Venice. It is unique even for its building characteristics: it is asymmetric, as its left side is larger than the right one by 24 cm and so it always navigates inclined on one side. It has its bottom flat ; this allows it to cross even depth of few cm . For its construction they are used 8 different kinds of wood and it is composed of 280 pieces. The only elements in metal are the characteristic "iron" of the head and the " risso" of the stern.