Much of Dennery is in Mabouya Valley which is made up of Derniere Riviere, Au Leon, Despinoze, Gadette, Grand Riviere, Grand Ravine, La Ressource, Richfond and other surrounding areas; and Frigate Island Nature Reserve is offshore a few kilometers to the south of the town.

The town of Dennery is located in the midst of a ruggedly beautiful section of Saint Lucia’s east coast. The modestly sheltered bay with a sizeable crag of an island in its center is port to a very productive fishing industry. Overlooks south of town provide a great view of it all. Just to the north of town is Fond d’Or Bay, a stretch of white sand beach framed by very scenic cliffs that can be seen from an overlook at the Fire Station located on the main road. Sault Falls is located a few miles inland from Dennery, it is a 20m high waterfall on the Dennery River also is the Frigate Island Nature Reserve. Operated by the St Lucia National Trust which is a breeding area for seabirds . There is a lovely estate called Mamiku Gardens which has rich history, currently a tourist attraction and features a low density development with land lots available for purchase.