La Géode is a mirror-finished geodesic dome that holds an Omnimax theatre in Parc de la Villette at the Cité des Sciences et de l'Industrie (City of Science and Industry) in the 19th arrondissement of Paris, France.
La Géode was designed by architect Adrien Fainsilber and engineer Gérard Chamayou. The geodesic dome is 36 metres (118 ft) in diameter, composed of 6,433 polished stainless steel equilateral triangles that form the sphere that reflects the sky. These triangles are 1.5 meters long and are fixed on a thin metal frame with the same triangular geodesic structure, consisting of 2,580 steel tube bars. The dome stands on a reinforced concrete base, which is attached to Cité des Sciences et de l'Industrie, the largest science museum in Europe. La Géode officially opened on May 6, 1985. After a similar venue located in La Défense closed in 2001, La Géode became the only spherical building in the Île-de-France region of France.
Movies are projected in IMAX format on a giant hemispherical screen that covers 1,000 square metres (11,000 sq ft). The auditorium is fitted with a 12-point sound system with four large subwoofers that deliver 21,000 watts in surround sound designed by Cabasse. The IMAX films, presented in high definition and Géode 3D-relief, feature science, nature, and travel documentaries, short and long feature-length films, and high definition animated subjects. It also presents satellite concert events, including live broadcasts of the Metropolitan Opera from New York City.
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