'Ooh, it’s so big'… First-time visitors gush as they strain their neck muscles gazing up to the Münster. It is. And rather beautiful. Celebrated for its 161.5m-high steeple, this Goliath of cathedrals, the world’s tallest, took 500 years to build from the first stone laid in 1377. Note the hallmarks on each stone, inscribed by cutters who were paid by the block. Those intent on cramming the Münster into one photo, filigree spire and all, should lie on the cobbles. Only by puffing up 768 spiral steps to the tower's 143m-high viewing platform can you appreciate the Münster’s dizzying height. There are terrific views of the Black Forest and, on cloud-free days, the Alps. The Israelfenster, a stained-glass window above the west door, commemorates Jews killed during the Holocaust. The Gothic-style wooden pulpit canopy eliminates echoes during sermons. Biblical figures and historical characters such as Pythagoras embellish the 15th-century oak choir stalls. The Münster’s regular organ concerts are a musical treat.