Andrew Graham-Dixon concludes his journey through American art by examining how it reflected and challenged the country's post-war culture. He begins in the purpose-built suburb of Levittown, Pennsylvania, before travelling to New York to examine works by Jasper Johns and Andy Warhol, then revealing how the otherworldly qualities of Los Angeles inspired painter Ed Ruscha. The presenter also discusses his love for the work of Philip Guston, meets Warhol's former lover Billy Name and artists Jeff Koons and James Rosenquist, and assesses artistic responses to the September 11, 2001 terrorist attacks