So head first for the tourist office on the huge Place Bellecour, in the middle of the Presqu'ile, the peninsula between the two rivers.
The tourist office is on the place bellecour. 
mnli hypothesis: The tourist office is on the place bellecour.  premise: So head first for the tourist office on the huge Place Bellecour, in the middle of the Presqu'ile, the peninsula between the two rivers.