We visit the beautiful St Michael and St Gudula Cathedral, dedicated to the patron saints of Brussels, its Gothic vaults soaring over the ruins of a Roman church. Outside, people are lounging on benches that were created in a contest to design city furniture. There's the Art Deco building known as the Bozar, an exhibition-cum-theatre-cum-concert space, most of which lies beneath street level the Art Nouveau building made of iron and glass, which is a museum of musical instruments. Crowning the hill is the 18th-century Palace, unobstructed views from which determined the height to which other buildings could aspire. The area around the Palace was rebuilt for the 1958 World Expo in Brussels, and there's a rotating sculpture called The Whirling Ear. Many buildings sport comic strips painted on their façades, of which Tintin is, of course, the most famous.