In “Welcome,” Gregor Schneider presents living space formerly occupied by a Syrian family at Haus Esters (DE). The family lived on the ground floor of the Mies van der Rohe-designed home during a closure period. Now vacant—the furniture and the sound of children’s voices are gone—only traces remain. Expressing solidarity with migrant families, Schneider “confronts the museum with a reality that unfolds outside its usual boundaries,” writes curator Sylvia Martin.