If you want to explore the flora and fauna of Sigriya, then you must visit the Wildlife Sanctuary in the citadel. This sanctuary is located around the Sigriya rocks. It is very close to the Minneriya National Park. The vegetation in the sanctuary mainly comprises shrub forests, dry evergreen forests and dry deciduous forests. You will find lot of elephants herding in this wildlife sanctuary. Other creatures that you will find in the sanctuary are falcons and eagles, among the rest.