In 1865, the great ring road commissioned by Austria-Hungaryemperor Franz Josef to replace the walls of old Vienna was completed to kudos across Europe. Just over three miles around and and 187 feet wide, back in those days it heralded the advent of "modern" 19th-century architecture, with some this grand capital's most iconic buildings designed by the greatest architects of the day - the State Opera, the national parliament, the city hall, University of Vienna, and many other... keep reading