The document provides an overview of Celtic, Romanesque, and Gothic art styles across Europe between ancient and medieval periods. Celtic art originated in Ireland and Britain, featuring intricate interlace patterns and illuminated manuscripts. Romanesque art developed after the fall of Rome and was characterized by rounded arches, relief sculptures, and illuminated works. Gothic art emerged in France and spread throughout Europe, most notably through innovations in cathedral architecture featuring stained glass, sculptures, and frescoes that told biblical stories to inspire worshippers.