sentences:  The restoration was made possible through several significant donations, including one in the amount of $13.5 million from the Evelyn and Walter Haas, Jr. Fund.Hargreaves Associates oversaw the project, and redesigned the site to complement the strong winds that shape the existing landscape.The Crissy Field Center, a partnership of the Parks Conservancy, National Park Service, and Presidio Trust, focuses on community engagement; it has provided programs to more than 800,000 students and adults since opening, including some 25,000 schoolchildren.