Institut Géographique National (IGN) 107 rue La-Boétie, 8ewww.ign.fr. The French Ordnance Survey: the best for maps of France and the entire world, plus guidebooks, satellite photos, day packs, map holders, etc. M° St-Philippe-Roule. Mon–Fri 9.30am–7pm, Sat 11–12.30 & 2–6.30pm.Librairie Ulysse 26 rue St-Louis-en-L'Île, 4e. An antiquarian travel bookshop in a charming location. M° Pont-Marie/Sully-Morland. Tues–Sat 2–8pm.
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