Main Sights and Attractions in the 4th Arrondissement: 1  The Beaubourg Neighborhood. 2  The Marais Neighborhood. 3  St-Gervais St-Protais Church. 4  St-Paul St-Louis Church. 5  Hotel de Sens (Medieval mansion) 6  Place des Vosges. 7  Hotel de Ville (Paris City Hall) 8  Old Jewish District (Rue des Rosiers and Le Pletzl)