Auguste Rodin, one of the most notable Art Nouveau sculptors, created the masterpiece "The Kiss", which features two figures intertwined in a passionate embrace, with their bodies and hair flowing together in a way that suggests the natural world.

Antoine Bourdelle's work "Hercules the Archer" is another prime example of Art Nouveau sculpture, incorporating natural forms and depicting the figure of Hercules as a powerful and muscular archer, his body twisted in a way that suggests the movement of a natural form.

Constantin Brancusi's abstract sculptures were also highly influential in the development of modern art, with works such as "Bird in Space" suggesting the idea of flight and freedom through its sleek and streamlined form.