Mitch and Emily Rales built Glenstone to share their extraordinary collection of modern and contemporary art. But they wanted to make this a different kind of museum – a blend of art, architecture and nature. Located 20 miles from Washington, on a 230-acre estate in Potomac, Md., Glenstone features some 1,300 works by such legends as Louise Bourgeois, Jackson Pollock, Mark Rothko, Andy Warhol and Jean-Michel Basquiat. Rita Braver gets a tour. Air Date: Jan 20, 2019