Diablo Foothills is an imposing gateway to the beautiful parklands of Mt Diablo State Park and Walnut Creek Open Space.
The East Bay Regional Park District began acquiring land for Black Diamond Mines Regional Preserve in the early 1970s.
According to Native American folklore, at the dawn of time, Tuyshtak (today's Mount Diablo) was the sacred birthplace of the world.
The area that is now Round Valley Regional Preserve was once home to California Indians.
Bring drinking water when you visit the 1,979-acre Preserve; no drinking water is available.
Contra Loma's 775 acres include an 80-acre reservoir for year-round fishing and a lifeguarded swim lagoon for summertime swimming.
Located at the junction of the Sacramento and San Joaquin rivers, this 595-acre island in the Sacramento Delta north of Pittsburg is the home of six rare and endangered plant species, and a variety of aquatic birds.
In 2017, solar panels were installed at Shadow Cliffs.
Bedrock mortars used by Native Americans for pounding acorns that were found in the area are reminders of Sunol's first inhabitants.
Waterbird Regional Preserve is a 198-acre area comprised of a wetland and the associated uplands to the east.