Throughout her fascinating life, Rachel “Bunny” Mellon collected art, traveled widely, and befriended presidents and royalty. But nothing inspired the wealthy tastemaker and arts patron, who died in 2014 at age 103, more than time spent in her gardens. Long tucked behind private fences, Mellon’s greenspaces included the Rose Garden she designed at the White House, her family properties in Nantucket and Antigua, and her beloved sprawling horse-country estate, Oak Spring, in Upperville, Virginia. For the first time ever, a new coffee-table book, The Gardens of Bunny Mellon, takes readers behind the gates to learn more about Mellon’s deeply rooted love of gardening. Here, a selection of images capture her Commonwealth estate, which is now maintained by the Oak Spring Garden Foundation.