The oldest part of the present Town Hall is its east wing. This wing, together with a shorter belfry, was built and completed in 1420 under direction of Jacob van Thienen. Initially, future expansion of the building was not foreseen, however, the admission of the craft guilds into the traditionally patrician city government apparently spurred interest in providing more room for the building. As a result, a second, somewhat longer wing was built on to the existing structure, with Charles the Bold laying its first stone in 1444. This west wing was built by Guillaume de Voghel who, in 1452, also built the Aula Magna at the Palace of Coudenberg. The facade is decorated with numerous statues representing nobles, saints, and allegorical figures. The present sculptures are reproductions; the older ones are in the city museum in the King's House across the Grand Place. The tower in Brabantine Gothic style emerged from the plans of Jan van Ruysbroek, the court architect of Philip the Good. By 1454, this tower, replacing the older belfry, was complete. Above the roof of the Town Hall, the square tower body narrows to a lavishly pinnacled octagonal openwork. Atop the spire, stands a 5-metre-high gilt metal statue of the archangel Michael, patron saint of Brussels, slaying a dragon or devil. The tower, its front archway and the main building's facade are conspicuously off-centre relative to one another. According to a legend, the architect, upon discovering this "error", leapt to his death from the tower. More likely, the asymmetry of the Town Hall was an accepted consequence of the scattered construction history and space constraints.
Classical wings
After the bombardment of Brussels in 1695, by a French army under the Duke of Villeroi, the resulting fire completely gutted the Town Hall, destroying the archives and the art collections. The interior was soon rebuilt, and the addition of two rear wings, in the Louis XIV style, transformed the L-shaped building into its present configuration: a quadrilateral with an inner courtyard, completed by Corneille Van Nerven in 1712.
19th-century restorations
The Town Hall underwent many restoration campaigns throughout the 19th century, first under the direction of Tilman-François Suys, starting in 1840. The Gothic interior was later revised by Victor Jamaer in 1868, in the style of his mentor Viollet-le-Duc. It was at this time that most of the statues of the Town Hall were made. The interior halls were replenished with tapestries, paintings, and sculptures, largely representing subjects of importance in local and regional history.