Don Castro Regional Park is 101 acres with a fishing lake, swim lagoon and paved and unpaved trails for pedestrians and bicycles. The trails around the lake and lagoon are for hiking only. There is wilderness around the two water areas that is home to turtles, frogs, ducks, raccoons and deer.
Perched on stilts above a salt marsh, the Hayward Shoreline Interpretive Center is your introduction to the ecology of the San Francisco Bay Estuary. The Interpretive Center features exhibits, programs and activities designed to inspire a sense of appreciation, respect and stewardship for the Bay, its inhabitants and the services they provide. After getting an overview of the park and its features, join a naturalist on one of the many weekend interpretive programs offered.
Sulphur Creek Nature Center is a wildlife education and rehabilitation facility whose mission is to promote the conservation of local environmental resources. There is a wildlife rehabilitation center, wildlife education, naturalists and docents are available along with local wildlife on display and a discovery center that teaches about watersheds and creek life.