Cinquantenaire Arcade, Triumphal arch in European Quarter, Brussels, Belgium

The Cinquantenaire Arcade is a memorial arcade in Parc du Cinquantenaire, Brussels, centred on a triple arch 30 metres wide and 45 metres high. Its pale grey stone arches are divided by fluted columns, and a bronze quadriga by Thomas Vinçotte and Jules Lagae tops the central bay. Curved colonnades extend to either side.

The arcade began as part of the 1880 National Exhibition marking 50 years of Belgian independence, with only the column bases built and a temporary wooden arch. After architect Gédéon Bordiau died in 1904, Charles Girault redesigned it as a triple arch; 450 workers built it in eight months, and Leopold II inaugurated it on 27 September 1905 for the 75th anniversary. It cost 7,500,000 gold francs, partly funded by Congo Free State money, prompting Émile Vandervelde to call it "the arcade of the severed hands".

Eight statues along the sides of the arch represent different Belgian provinces, expressing national identity through architectural elements.

The arch is the centrepiece of the Cinquantenaire esplanade, with the nearest metro stations Schuman to the west and Merode to the east. A spiral staircase, now with an elevator, leads to an exhibition room under the quadriga and two terraces beside it. The esplanade also hosts the start of the annual 20 km of Brussels run.

The arch's columns follow the line of the Avenue de Tervueren, once split into three roadways flanked by double rows of trees. Eight seated statues of the Belgian provinces stand at the foot of the pillars, Brabant being shown instead by the quadriga above. Twelve spandrels carry allegories of Arts and Industry.