Less than 20 miles from Washington, DC, there's a place called Glenstone. It was founded by Mitch and Emily Rales and opened in 2006. Last fall, Glenstone took a big leap forward. But what, exactly, is Glenstone? It's an art museum, with 200+ acres of grounds. It's private. It's free. Kids and chewing gum aren't allowed, nor are taking pictures or using cell phones. What is Glenstone, as a museum, trying to do? Emily Rales, who also serves as director and chief curator of Glenstone, tells us all about it.