Angelos Giallinas expressed himself primarily in watercolor. A large portion of his oeuvre comprised landscapes from the island of Corfu, his birthplace and home following his studies in Rome, Naples, and Venice. An extensive traveler, Giallinas made a multitude of watercolor renderings of views and scenes of the places he visited, work that he exhibited repeatedly in Greece as well as abroad. He was associated with the Scuola di Posilipo, founded in Naples by the painter Giacinto Gigante and the best-known school of watercolor technique. Giallinas brought images to paper with a sensitivity and spontaneity particular to this medium, without neglecting the careful attention to detail, which he rendered with an expert knowledge of drawing and the precise arrangement of areas of pure, bright color.