“Siah Armajani: Follow This Line”

Not quite architecture and not quite sculpture, the work of Iranian-American artist Siah Armajani has taken a conceptual approach to dealing with the themes of loss, exile and the ever-present impact of history on human affairs. For Armajani’s first major museum retrospective, the Met Breuer looks back at his 60-year career with a roundup that includes never-before-seen pieces from the 1960s and ’70s.