A visitor walks through Richard Serra's sculpture “Sylvester” at the Glenstone Museum in Potomac, Maryland, USA, 22 August 2019. Spread across 230 acres in a posh Washington suburb, Glenstone is the largest contemporary private museum in the country. The museum's stated mission is to integrate art, architecture, and landscape into a serene and contemplative environment. (Photo by Jim Lo Scalzo/EPA/EFE)
