The territory of Delta del Po represents a delicate equilibrium between land and water, maintained by man with works of cultivation and consolidation. An environment of great interest arose out of this action, from points of view regarding both flora and fauna, and by this stage its ecological, cultural and historical value is widely recognised. Furthermore, the territory of Delta del Po is also the purpose of a tourism that nowadays does not reguest only seaside enjoyment but that also wants even more experiences of nature. It's in order to satisfy this need, but also to educate the tourist to respect the environment, in order to make known the advantages offered by this and to preserve a context of great scientific interest, that the Veneto Region through the Forestry Service has realised the costal Botanical Garden in Porto Caleri, close to Rosolina Mare. A tour along the Delta del Po is also the best for birdwatchers and photograpers, with wide valleys and lagoons, coloured sunsets, thousands of moorhens, herons, limicola falcinellus. You can discover the extensive and intensive breeding of doryfish, bassfish, mullets. A stretch on the left bank of the Po di Maistra, an old branch of the Po, is considered as the most spectacular one for its wide variety of birds and incredible wealth of trees. Each area in the Delta presents particular features of environmental, morphological, vegetative and zoological aspects which clearly distinguish themselves; particular aspects where surviving remains of nature, almost disappeared, mingle with new animal and vegetable elements developing new systems.