History seeps through the twisting lanes and cafe-rimmed plazas of Grande Île, Strasbourg's Unesco World Heritage–listed island bordered by the River Ill. These streets – with their photogenic line-up of wonky, timber-framed houses in sherbet colours – are made for aimless ambling. They cower beneath the soaring magnificence of the cathedral and its sidekick, the gingerbready 15th-century Maison Kammerzell, with its ornate carvings and leaded windows. The alleys are at their most atmospheric when lantern-lit at night.