“As the first colonising country, and the last to liberate its colonies,” Camila Maissune, a co-curator of the exhibition “Black Ancient Futures,” told The Art Newspaper, “Portugal has not yet clearly and transparently embraced its past.” This exhibition in Lisbon, which brings together 11 formidable artists from the African diaspora, attempts to do just that. Across the museum’s two buildings and its gardens, artists such as April Bey, Nolan Oswald Dennis, and Jota Mombaça present large-scale installations, performance art, and video work. A few miles away, Lisbon’s beaches beckon, once home to the ships that altered the destinies of so many. —Elena Clavarino