By Design

COTTAGE INDUSTRY – Lee Cowan reports on how accessory dwelling units (ADUs) are helping alleviate the housing shortage and giving homeowners new options.ARDROSSAN – Jane Pauley offers a history of the Ardrossan Estate.JON FAVREAU – Tracy Smith goes behind the scenes with actor Jon Favreau, who directed the latest "Star Wars" film, "The Mandalorian and Grogu."IN THE BAG – Alina Cho explores the rich history of the luxury bag and luggage maker Louis Vuitton and takes a rare peek into the company's Paris archives.CLAY TIME! – Conor Knighton makes a pilgrimage to the American Southwest to learn how earthen architecture made of adobe has shaped our lives.POSTCARD FROM FINLAND – Seth Doane travels to Finland to explore why the bold, instantly recognizable look of Marimekko has been a true design icon for 75 years.SHINING BRIGHT – Mo Rocca shines a light on how chandeliers – vintage and modern – can brighten up a room.LOCAL FLAVOR – Susan Spencer samples three Philadelphia food essentials – cheesesteaks, soft pretzels and hoagies.DESIGNING MAN – Robert Costa looks back at the design legacy of influential 19th-century Philadelphia architect Frank Furness.WORLD VIEW – Martha Teichner visits a library in Portland, Maine, where half a million maps dating back to 1475 are used to educate thousands of students a year.ALL FALL DOWN – David Pogue meets 27-year-old Massachusetts artist Lily Hevesh, whose one-of-a-kind domino creations have made her a YouTube sensation.FLOWER POWER – Jim Axelrod tours Longwood Gardens, a 1,500-acre botanical garden in Kennett Square, Pa.