Abstract: Throughout the history of the Surrealism, a mythical triangle is taking shape on the map of Paris: 42 rue Fontaine ; 45 rue Blomet, 54 rue du Château. In the form of an investigation, we’ll try to understand how the disappearance of 54, rue de Château, set in the area of Plaisance, in the north west of the 14th district of Paris did occur. As in this place, from 1923 to 1928 the main figures of the Surrealism used to meet.