the Monument to the Belgian Pioneers in Congo (1921). The surrounding park esplanade has been used for several purposes, such as military parades and drive-in movies in the summer, as well as a filming location for films and music videos. It is also the starting point for the 20 km of Brussels, an annual run with 30,000 participants. Cinquantenaire Arcade The Cinquantenaire Arcade (, ) is a memorial arcade in the centre of the Parc du Cinquantenaire. The centrepiece is a monumental triple arch known as the Cinquantenaire Arch (, ). It is topped by a bronze quadriga sculptural group with a female charioteer, entitled Brabant Raising the National Flag, by Jules Lagae and Thomas Vincotte. The other sculptures include personifications of Belgian Provinces (Brabant being represented by the quadriga): Hainaut and Limburg by Albert Desenfans, Antwerp and Liège by Charles van der Stappen, East Flanders and West Flanders by Jef Lambeaux, and Namur and Luxembourg by Guillaume de Groot. Military Museum The Royal Museum of the Armed Forces and Military History is a military museum that occupies the two northernmost halls of the historic complex. The museum's collection originally consisted of approximately 900 pieces collected by the officer Louis Leconte following World War I. Leconte collected considerable equipment abandoned by the Germans in 1918. The museum was originally installed on the site of La Cambre Abbey and moved to the Cinquantenaire Park in 1923. The collection was later heavily enriched by legacies, gifts and exchanges. Nowadays, the museum displays uniforms, weapons, vehicles and military equipment of all ages and all countries. The north wing, built by Gédéon Bordiau, has been occupied by the Aviation Hall since 1972, when the Air and Space gallery was inaugurated. The collection includes various types of aircraft, both military and civilian, some dating back to the early 20th century. It includes surviving WWI aircraft like the Nieuport 17 and Sopwith Camel, whilst the most recent additions include an F-16 Fighting Falcon and Westland Sea King. The collection as a whole is one of the largest in the world. Art & History Museum The Art & History Museum is a museum of antiquities and ethnographic and decorative arts that occupies most of the southern part of the complex. It is one of the constituents of the Royal Museums for Art and History (RMAH), which itself is part of the Belgian federal institute of the Belgian