The oldest part of the present Town Hall is its east wing together with a shorter belfry. It 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 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.
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 96 metre high 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 facade are conspicuously off-centre relative to one another. According to 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.
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 transformed the L-shaped building into its present configuration: a quadrilateral with an inner courtyard completed by Corneille Van Nerven in 1712. The Gothic interior was revised by Victor Jamar in 1868 in the style of his mentor Viollet-le-Duc. The halls have been replenished with tapestries, paintings, and sculptures, largely representing subjects of importance in local and regional history.
The Town Hall accommodated not only the municipal authorities of the city, but until 1795 also the States of Brabant. In 1830, a provisional government assembled here during the attempt of the Third French Revolution which provoked the separation of the Southern Netherlands from the Northern Netherlands. resulting in the formation of Belgium as is known presently.
References:The Palazzo Colonna is a palatial block of buildings built in part over ruins of an old Roman Serapeum, and has belonged to the prestigious Colonna family for over twenty generations.
The first part of the palace dates from the 13th century, and tradition holds that the building hosted Dante in his visit to Rome. The first documentary mention notes that the property hosted Cardinal Giovanni and Giacomo Colonna in the 13th century. It was also home to Cardinal Oddone Colonna before he ascended to the papacy as Martin V (1417–1431).
With his passing, the palace was sacked during feuds, and the main property passed into the hands of the Della Rovere family. It returned to the Colonna family when Marcantonio I Colonna married Lucrezia Gara Franciotti Della Rovere, the niece of pope Julius II. The Colonna"s alliance to the Habsburg power, likely protected the palace from looting during the Sack of Rome (1527).
Starting with Filippo Colonna (1578–1639) many changes have refurbished and create a unitary complex around a central garden. Architects including Girolamo Rainaldi and Paolo Marucelli labored on specific projects. Only in the 17th and 18th centuries were the main facades completed. Much of this design was completed by Antonio del Grande (including the grand gallery), and Girolamo Fontana (decoration of gallery). In the 18th century, the long low facade designed by Nicola Michetti with later additions by Paolo Posi with taller corner blocks (facing Piazza Apostoli) was constructed recalls earlier structures resembling a fortification.
The main gallery (completed 1703) and the masterful Colonna art collection was acquired after 1650 by both the cardinal Girolamo I Colonna and his nephew the Connestabile Lorenzo Onofrio Colonna and includes works by Lorenzo Monaco, Domenico Ghirlandaio, Palma the Elder, Salviati, Bronzino, Tintoretto, Pietro da Cortona, Annibale Carracci (painting of The Beaneater), Guercino, Francesco Albani, Muziano and Guido Reni. Ceiling frescoes by Filippo Gherardi, Giovanni Coli, Sebastiano Ricci, and Giuseppe Bartolomeo Chiari celebrate the role of Marcantonio II Colonna in the battle of Lepanto (1571). The gallery is open to the public on Saturday mornings.
The older wing of the complex known as the Princess Isabelle"s apartments, but once housing Martin V"s library and palace, contains frescoes by Pinturicchio, Antonio Tempesta, Crescenzio Onofri, Giacinto Gimignani, and Carlo Cesi. It contains a collection of landscapes and genre scenes by painters like Gaspard Dughet, Caspar Van Wittel (Vanvitelli), and Jan Brueghel the Elder.
Along with the possessions of the Doria-Pamphilij and Pallavacini-Rospigliosi families, this is one of the largest private art collections in Rome.