'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.