Square du Petit Sablon, created at the end of the nineteenth century by the architects Henri Beyaert and Paul Hankar, is a magnificent summary of Belgian history at the heart of one of the oldest districts of Brussels. This guided walking tour explores an unusual built environment, including the Egmont Park, with its palace and former stables; Rue aux Laines with its eighteenth-century town houses; the Prince Albert barracks with its recently restored monumental facades; and the post-modern Ministry of Foreign Affairs which overlooks Rue des Quatre Fils Aymon and Rue des Six Jeunes Hommes. Lots of history on a pocket-handkerchief-sized area.