Our Mission: POST protects open space on the Peninsula and in the South Bay for the benefit of all. Our Vision: POST is creating a network of protected lands where people and nature connect and thrive. These lands are preserved forever so present and future generations benefit from the careful balance of rural and urban landscapes that makes our region extraordinary. Our Impact: Since our founding in 1977, POST has protected more than 87,000 acres of permanent open space, farms and parkland in San Mateo, Santa Clara and Santa Cruz counties. These lands are now part of the National Park system, National Wildlife Refuge system, California State Parks, county and city parks, regional preserves and private farmland. POST takes a science-driven approach in our decisions about land acquisition and stewardship so that every property is appropriately cared for.