"Basilica of Saint Mary" Bonita Thurner (20th C.). Oil on canvas painting. Inscribed verso. Signed lower right. Sight Size: 27.5 x 25 in. Overall Size: 33 x 31 in. The Basilica of Saint Mary is a Roman Catholic minor basilica located on its own city block along Hennepin Avenue between 16th & 17th Streets in downtown Minneapolis, Minnesota. It was the first basilica established in the United States.