remarkable Louis XVI style neoclassical ensemble. Bearing numbers from 1 to 14, they are arranged symmetrically around the square: the former Hôtel du Lotto (no. 1–2) was built for the Imperial and Royal Lottery of the Netherlands. Also known as the Hôtel Altenloh after the jeweller's shop that occupied the building from 1920 to 1962, it is currently home to the Magritte Museum, part of the Royal Museums of Fine Arts of Belgium. the former Hôtel des Brasseurs (no. 3) was built by the Corporation of Brewers. It is currently part of the Fin-de-Siècle Museum, another constituent of the Royal Museums. Also known as the Hôtel Gresham (for the wing facing the Place Royale), after the Gresham Life Assurance Society Limited that acquired it in 1900, or the Hôtel d'Argenteau (for the wing along the Rue de la Régence), it has an interesting Art Nouveau interior by the architect . the former Hôtel de Templeuve (no. 4), built for Countess Brigitte Scockaert de Tirimont, dowager of Templeuve, on the site of her family's former town house. It was sometimes called the Hôtel Arconati, after the name of its second owner and also the Palace of the Count of Flanders because Prince Philippe, Count of Flanders, brother of King Leopold II, had acquired it in 1866 and lived there for nearly forty years. This building has been occupied by the Court of Audit of Belgium since 1984. the two former Hôtels de Coudenberg (no. 5–6 and 7–8) were built by the Abbey of St. James on Coudenberg. The building to the right of St. James' Church is currently occupied by the ING Cultural Centre (formerly the BBL Cultural Centre). The building on the left is occupied by the Constitutional Court of Belgium. the former Hôtel Belle-Vue (no. 9) was built by Philippe de Proft to install a luxury hotel. It is currently occupied by the BELvue Museum. the former Hôtel de Grimbergen (no. 10) owes its name to Grimbergen Abbey which undertook its construction. It currently belongs to the government of the Brussels-Capital Region. Under the building are the remains of the chapel of the former Coudenberg Palace. the former Hôtel de Spangen (no. 11–14) owes its name to the Earl of Spangen for whom it was built. The building at the corner of the square and the / (no. 13–14) is now part of the Musical Instruments Museum (MIM). Porticoes