Smithsonian HD Network A soaring tour over Southern California explores the stunning beaches, vast deserts, sprawling city and unique culture. 2026-08-08 A coast-to-coast tour over America's man-made structures, old and new; the Statue of Liberty and the Golden Gate Bridge. 2026-08-08 An aerial tour over Kentucky reveals a state of racetracks, country music highways, bourbon distilleries and a history of feuds and traditions. 2026-08-08 A sky-high tour over Iowa explores its vast stretches of farmland, covered bridges and evolution from wilderness to statehood. 2026-08-08 A series of nuclear bomb tests conducted outside Las Vegas in the 1950s and early '60s. 2026-08-08 Personal accounts of the atomic attack on Hiroshima in 1945; the comprehensive story of the bombing of Hiroshima, from those who built it, dropped it, and survived it. 2026-08-09