Stephansplatz 3, 1010 Wien, Austria | St. Stephen's Cathedral is considered the most central point of Vienna, located in its very heart. You cannot miss it on your visit in Vienna and it can been seen from almost anywhere in the center. You can also reach St. Stephen's via the subway station "Stephansplatz" right in front of the Cathedral, lines U1 (red line) and U3 (orange line).