The city's most important boulevard is a circular must.
Vienna's famous ring road.
Although not widely remembered today, until the mid-19th century the city of Vienna was encircled by a thick wall built in the 13th century to defend against neighbouring Teutonic and Madyar peoples, but especially Turks from the south, who would attack periodically. But eventually the city's growth led to the demolition of the walls in 1857 and the construction of an enormous circular avenue around the old city centre. This Ringstrasse offers the perfect route to take in many of the historic quarter's top sights, including the city hall, Votive Church, and national parliament and university.