France (Saint Louis). The island is connected to the rest of Paris by bridges to both banks of the river and by the Pont Saint Louis to the Ile de la Cité. This island was formerly used for the grazing of market cattle and stocking wood. One of France’s first examples of urban planning, it was mapped and built from end to end during the 17th-century reigns of Henri IV and Louis XIII. The Île St-Louis remains a lovely place to walk around and admire the still standing mansions.