Neoclassicism is a cultural movement drawing from the art and architecture of ancient Greece and Rome, coinciding with the 18th century Enlightenment. Influential artists include Jacques-Louis David, known for historical paintings like 'The Death of Marat' and 'Napoleon Crossing the Alps', and Jean-Auguste-Dominique Ingres, recognized for his portraits and mythological themes. The movement also featured sculptors like Antonio Canova, famous for his marble works, and Bertel Thorvaldsen, noted for mythological characters.