In 2001, Walter and Leonore Annenberg established The Annenberg Foundation Trust at Sunnylands to “address serious issues facing the nation and the world community.” They envisioned Sunnylands as a place where intimate and solution-driven meetings could take place as they had while the couple was alive.
They specified as well that the Trust provide a way for the public to learn about the historical significance of Sunnylands.
Since opening Sunnylands in 2012, the trustees and staff have created what the Annenbergs envisioned. The 200-acre estate and historic residence is providing a place of tranquility and hospitality where national and international leaders convene to "promote world peace and facilitate international agreement." In that same time, more than half a million visitors have enjoyed Sunnylands Center & Gardens and its offerings.