Initially installed on Kassel's main Square, the work earned Olu Oguibe the prestigious 2017 Arnold Bode Prize, but was also met with indignation for what some right-wing politicians read as a provocation in the midst of the raging debate on Germany’s asylum policy. The 16.3-metre-tall concrete obelisk bears the inscription: ‘I was a stranger and you took me in’ – a verse from the New Testament’s Gospel of Matthew – in gold letters in German, English, Arabic and Turkish. While Monument remains Oguibe’s best-known piece, his current solo exhibition at Vienna’s Galerie Kandlhofer demonstrates his sustained engagement with forms of memorialization. Image: Olu Oguibe, Many Thousand Gone (detail), 2000, ink on acid-free watercolour paper. Courtesy: the artist and Galerie Kandlhofer, Vienna; Photograph by ©Manuel Carreon-Lopez /