NOVEMBER 25 & 28

Suburban expansion happened so rapidly that most Americans already lived in one of them before anyone noticed that the suburbs weren’t working. Suburbs: Arcadia for Everyone, a 60-minute documentary, tries to chart what went wrong by exploring early suburban developments like Llewellyn Park, N.J.; suburban-style urban enclaves like Forest Hills, N.Y.; remote religious tent communities that were transformed into towns like Oak Bluffs, Mass.; and the mother of all soulless tract developments, Levittown, N.Y. (pictured). At 2 p.m. Saturday and at noon Tuesday at the National Building Museum, 401 F St. NW. FREE. (202) 272-2448. (Mark Jenkins)