When to go and what to see
The Roman settlement, built near a river access road, is today in the middle of extensive cultivated land. Between the nearby Ferrara Waterway and the land reclamation channels stretches the Vallette di Ostellato Oasis, ideal for birdwatching, sport fishing, cycling and other outdoor activities. They are the only remains of the ancient valleys that once surrounded the town of Ostellato, spared by the last reclamation of the Mezzano valley and established as an oasis for the protection of wildlife.
The four valley coves constitute a unique freshwater wetland biotope in the area, especially in terms of the quantity and variety of animals that populate it. As many as 150 species of waterfowl, including both nesting and migratory species, can be found in the Vallette.