Stephansdom stands at the exact middle of Vienna and has done for seven centuries. Its south tower reaches nearly 137 metres and was among the tallest structures in Europe for a very long time; the Viennese call it Steffl, as though it were a person. The Romanesque west front with its Giant's Door survives from the 1200s, and everything behind it is High Gothic — a thicket of pinnacles outside, and inside a stone pulpit with a figure leaning from a window beneath it, traditionally read as the carver's self-portrait.
The roof is what people photograph: about 230,000 glazed tiles laid in hard chevrons, with a double-headed eagle picked out on the south side. It is almost entirely new. In April 1945 fire spread into the cathedral from burning shops nearby, brought down the roof and the choir vaulting, destroyed the organ and the choir stalls, and shattered the great bell. The rebuilding was divided among the Austrian provinces, each paying for a part — a floor, a window, a set of pews — and the cathedral fully reopened in 1952. What you are standing in is medieval in design and postwar in fabric.