It houses the Bibliothèque publique d'information, a vast public library, the Musée National d'Art Moderne which is the largest museum for modern art in Europe, and IRCAM, a centre for music and acoustic research. Because of its location, the Centre is known locally as Beaubourg (IPA: [bobuʁ]). It is named after Georges Pompidou, the President of France from 1969 to 1974 who decided its creation, and was officially opened on 31 January 1977 by President Valéry Giscard d'Estaing. The Centre Pompidou has had over 150 million visitors since 1977.
The sculpture, Horizontal by Alexander Calder, a free-standing mobile that is twenty-five feet high, was placed permanently in front of the Centre Pompidou by the architect of the building.
Paris, the capital of France, has an annual 30 million foreign visitors, and so is the most visited city in the world. Paris' sights include monuments and architecture, such as its Arc de Triomphe, Eiffel Tower and neo-classic Haussmannian boulevards and buildings as well as museums, operas and concert halls. There are also more modern attractions such as its suburban Disneyland Paris.