The IGN TOP 25 hiking map No. 1328 OT covers the following area: La Tranche-sur-Mer, l'Aiguillon-sur-Mer, Marais Poitevin Regional Nature Park.
- Contour lines at 10-metre intervals.
- Detailed legend: vegetation, rocks, transport routes down to the smallest paths, buildings down to individual sheds, woodland, isolated trees, rivers, springs and more.
- Waymarked trails and tourist information are shown.
- Scale: 1:25,000 (1 cm = 250 m).
Municipalities covered: Jard-sur-Mer, Saint-Vincent-sur-Jard, La Faute-sur-Mer, La Tranche-sur-Mer, L'Aiguillon-sur-Mer, Le Givre, Curzon, Saint-Hilaire-la-Forêt, Saint-Cyr-en-Talmondais, Lairoux, La Jonchère, Avrillé, Longeville-sur-Mer, Saint-Benoist-sur-Mer, Le Bernard, La Bretonnière-la-Claye, Saint-Denis-du-Payré, Grues, Saint-Michel-en-l'Herm.
Places to discover: Marais poitevin Regional Nature Park, Pertuis Breton, Pointe du Grouin du Cou, Pointe d'Arçay, Pointe des Baleines, Pointe de Chassiron, Ancienne Abbaye de Lieu-Dieu, la Brunière, Dolmen du Grand Bouillac, Guignardière Castle, Granges-Cathus Castle, Maison de G. Clemenceau, St-Denis-du-Payré Nature Reserve.