Parks and nature reserves Oasi Naturalistica di Ripa Bianca The Ripa Bianca Nature Reserve covers an area of 310 hectares and is entrusted to the management of WWF Italia. Inside is the educational and naturalistic area “Sergio Romagnoli” established in 1997. The reserve has about 150 species of birds including the heron. The vegetation instead preserves a multitude of tree species including various types of willow and poplar.