Billionaire Donald Bren led the permanent protection of more than 57,500 acres of California’s historic Irvine Ranch, nearly 60% of the property; almost 40,000 acres later received National Natural Landmark status

• Billionaire real-estate developer Donald Bren helped turn a significant portion of California’s historic Irvine Ranch into a vast network of protected public lands, with 57,500 acres now preserved as open space and parklands.
• The protected acreage represents roughly 60% of the original 93,000-acre Irvine Ranch, a sprawling