Brussels , officially the Brussels Region or Brussels-Capital Region , is the de facto capital city of the European Union (EU) and the largest urban area in Belgium. It comprises 19 municipalities, including the City of Brussels proper, which is the capital of Belgium, Flanders and the French Community of Belgium.
Brussels has grown from a 10th-century fortress town founded by a descendant of Charlemagne into a metropolis of more than one million inhabitants. The metropolitan area has a population of over 1.8 million, making it the largest in Belgium.
Since the end of the Second World War, Brussels has been an important centre for international politics. The presence of the main EU institutions as well as the headquarters of the North Atlantic Treaty Organization (NATO) has made the city a polyglot home of many international organisations, politicians, diplomats and civil servants.
Although historically Dutch-speaking, Brussels became more and more French-speaking over the 19th and 20th centuries. Today a majority of inhabitants are native French-speakers, although both languages have official status.[11] Linguistic tensions remain, and the language laws of the municipalities surrounding Brussels are an issue of much controversy in Belgium.


Municipalities
The 19 municipalities (communes) of the Brussels-Capital Region are political subdivisions with individual responsibilities for the handling of local level duties, such as law enforcement and the upkeep of schools and roads within its borders. Municipal administration is also conducted by a mayor, a council, and an executive.
In 1831, Belgium was divided into 2,739 municipalities, including the 19 in the Brussels-Capital Region. Unlike most of the municipalities in Belgium, the ones located in the Brussels-Capital Region were not merged with others during mergers occurring in 1964, 1970, and 1975. However, several municipalities outside of the Brussels-Capital Region have been merged with the City of Brussels throughout its history including Laeken, Haren, and Neder-Over-Heembeek, which were merged into the City of Brussels in 1921.
The largest and most populous of the municipalities is the City of Brussels, covering 32.6 square kilometres (12.6 sq mi) with 145,917 inhabitants. The least populous is Koekelberg with 18,541 inhabitants, while the smallest in area is Saint-Josse-ten-Noode which is only 1.1 square kilometres (0.4 sq mi). Despite being the smallest municipality, Saint-Josse-ten-Noode has the highest population density of the 19 with 20,822 inhabitants per km².

Architecture
The architecture in Brussels is diverse, and spans from the mediaeval constructions on the Grand Place to the postmodern buildings of the EU institutions.
Main attractions include the Grand Place, since 1988 a UNESCO World Heritage Site, with the Gothic town hall in the old centre, the St. Michael and Gudula Cathedral and the Laken Castle with its large greenhouses. Another famous landmark is the Royal Palace.
The Atomium is a symbolic 103-metre (338 ft) tall structure that was built for the 1958 World’s Fair. It consists of nine steel spheres connected by tubes, and forms a model of an iron crystal (specifically, a unit cell). The architect A. Waterkeyn devoted the building to science. Next to the Atomium is the Mini-Europe park with 1:25 scale maquettes of famous buildings from across Europe.
The Manneken Pis, a bronze fountain of a small peeing boy is a famous tourist attraction and symbol of the city.
The Statue of Europe Unity in Peace (French sculptor Bernard Romain):This monumental work dedicated to Europe carries a universal symbol of brotherhood,tolerance and hope.Etterbeek Van Maerlant street
Other landmarks include the Cinquantenaire park with its triumphal arch and nearby museums, the Basilica of the Sacred Heart, Brussels Stock Exchange, the Palace of Justice and the buildings of EU institutions in the European Quarter.

Cultural facilities include the Brussels Theatre and the La Monnaie Theatre and opera house. There is a wide array of museums, from the Royal Museum of Fine Art to the Museum of the Army and the Comic Museum. Brussels also has a lively music scene, with everything from opera houses and concert halls to music bars and techno clubs.
The city centre is notable for its Flemish town houses. Also particularly striking are the buildings in the Art Nouveau style by the Brussels architect Victor Horta. Some of Brussels' districts were developed during the heyday of Art Nouveau, and many buildings are in this style. Good examples include Schaerbeek, Etterbeek, Ixelles, and Saint-Gilles. Another example of Brussels Art Nouveau is the Stoclet Palace, by the Viennese architect Josef Hoffmann. The modern buildings of Espace Leopold complete the picture.