Classical ballet is any of the traditional, formal styles of ballet that exclusively employ classical ballet technique. It is known for its aesthetics and rigorous technique (such as pointe work, turnout of the legs, and high extensions), its flowing, precise movements, and its ethereal qualities. There are stylistic variations related to an area or origin, which are denoted by classifications such as Russian ballet, French ballet, British ballet and Italian ballet. For example, Russian ballet features high extensions and dynamic turns, whereas Italian ballet tends to be more grounded, with a focus on fast, intricate footwork. Many of the stylistic variations are associated with specific training methods that have been named after their originators. Despite these variations, the performance and vocabulary of classical ballet are largely consistent throughout the world. History Ballet originated in the Italian Renaissance courts and was brought to France by Catherine de' Medici in the 16th Century. During ballet's infancy, court ballets were performed by aristocratic amateurs rather than professional dancers. Most of ballet's early movements evolved from social court dances and prominently featured stage patterns rather than formal ballet technique. In the 17th century, as ballet's popularity in France increased, ballet began to gradually transform into a professional art. It was no longer performed by amateurs, but instead ballet performances started to incorporate challenging acrobatic movements that could only be performed by highly skilled street entertainers. In response, the world's first ballet school, the Académie Royale de Danse, was established by King Louis XIV in 1661. The Academie's purpose was to improve the quality of dance training in France and to invent a technique or curriculum that could be used to transform ballet into a formal discipline. Shortly after the Academie was formed, in 1672, King Louis XIV established a performing company called the Academie Royal de Musique de Dance (today known as Paris Opera), and named Pierre Beauchamp the head dancing-master. While at the Academie Royal, Beauchamp revolutionized ballet technique by inventing the five positions (first, second, third, fourth and fifth) of ballet, which to this day remain the foundation of all formal classical ballet technique. Famous dancers in history – Anna Pavlova: 12 February 1881 - 23 January 1931 – Dame Margot Fonteyn: 18 May 1919 – 21 February 1991 – Rudolf Nureyev: 17 March 1938 – 6 January 1993 Development Before classical ballet developed, ballet was in a period referred to as