Since the beginning of his career, the Swiss artist Thomas Hirschhorn has mainly featured his work in public spaces such as sidewalks and parking lots, intentionally avoiding galleries as too elitist and closed off. It was his way of offering art to those overlooked in society. “I want to use art as a tool to establish contact with the Other,” Hirschhorn has said. “I am convinced that the only possible contact with the Other happens ‘One to One,’ as equals.” Inspired by the work of Andy Warhol and Joseph Beuys, Hirschhorn uses common materials like cardboard and duct tape. For these art projects in Spain and Portugal, Hirschhorn has built his own altar for Warhol’s Marilyn (1986), bringing the work to train stations across Madrid and Lisbon. The project runs alongside the first retrospective of his work in 20 years, titled “My Atlas # Our Atlas.” The result speaks to the same artistic process he’s used since 1983. —Maggie Turner