The Kiss (1907-08) was a premier modernist sculpture and Brâncuși received international recognition. It was an unconventional stone sculpture, depicting two figures, entwined in an intimate embrace
2. Princess X (1915–1916)
The phallic-shaped polished bronze sculpture was intended to be Princess Marie Bonaparte. The sculpture is thought to represent her lifelong obsession with the penis to achieve vaginal orgasm.
3. Sleeping Muse I (1910)
With markings to depict features like hair, nose, lips, and closed eyes, it is the head of an incorporeal model. The sculpture has "an abstract, curvilinear quality and a smooth contour."
4. Bird in Space (1923)
Bird in Space (1923) was one of his popular modernist sculpture and Brâncuși established the movement of a bird rather than its physical features. This reductive sculpture is made of smooth, elongated forms.