2 The city lies in the northeastern corner of Austria , along the Danube River .
28 Vienna lies in the northeastern corner of Austria , between the foothills of the Alps and the Carpathians , where the Danube ( German: Donau ) , Europe's second longest river , has cut its course through the mountains .

3 The Innere Stadt ( Inner City ) is an area in the center of the city that contains most of Vienna's famous buildings .
48 At the core is district I , the Innere Stadt , which contains most of the city's famous structures .

3 The Innere Stadt ( Inner City ) is an area in the center of the city that contains most of Vienna's famous buildings .
84 On the eastern side of the Innere Stadt lies the City Park , rich in monuments .

3 The Innere Stadt ( Inner City ) is an area in the center of the city that contains most of Vienna's famous buildings .
85 The Innere Stadt and its immediate neighbourhood are still , unlike the older parts of most European cities , the fashionable quarter , containing the government offices , the principal hotels , embassies and legations , and many other fine buildings .

4 Surrounding this area is a circular road called the Ringstrasse .
49 Surrounding the heart of the city is the Ringstrasse , or Ring , a circular road lined with grand buildings , monuments , and parks .

5 This road is lined with grand buildings , monuments , and parks .
49 Surrounding the heart of the city is the Ringstrasse , or Ring , a circular road lined with grand buildings , monuments , and parks .

5 This road is lined with grand buildings , monuments , and parks .
260 The stately public buildings and parks along this great avenue emerged over the years .

11 Another notable site in Vienna is the Hofburg , which is a large complex of buildings .
69 The vast complex of the Imperial Palace , the Hofburg ( or Burg ) , lies along the Ringstrasse .

14 In addition , it houses the Spanish Riding School , which features the famous Lipizzaner stallions ( horses) .
72 It houses the imperial treasury of the Holy Roman and Austrian empires , the Austrian National Library , the Albertina and several other museums , and the Spanish Riding School .

15 The offices of Austria's president are there as well .
73 The state apartments in one wing of the Hofburg serve as the offices of Austria's president .

18 The Museum of Fine Arts has a large collection of 16th- and 17th-century paintings , while the Museum of Natural History has a collection that includes gems and fossils .
185 Among them are the Albertina , with its immense collection of graphic arts , including engravings by Durer and Rembrandt; the Kunsthistorisches Museum , with the largest Bruegel collection outside The Netherlands; the Academy of Fine Arts , housing the superb Habsburg collection of Old Masters , especially rich in Flemish and Dutch paintings; the Imperial Treasury , with the imperial crown and the regalia of the Holy Roman emperors and the house of Habsburg; the museums of natural history , ethnology , military history , and technology; the Clock Museum; and the Museum of the City of Vienna , with its exhibits of Viennese history .

19 The Schonbrunn Palace , the summer residence of the Hapsburgs , with its splendid rooms and great formal park , lies to the southwest in the suburb of Hietzing .
86 The Schonbrunn Palace , the summer residence of the Habsburgs , with its splendid rooms decorated in Rococo style and its great formal park , lies to the southwest in the suburb of Hietzing .

22 Most of the city's population is Roman Catholic .
120 Two-thirds of the city's population are Roman Catholic and only a very small percentage Protestant .

23 Vienna is the cultural center of Austria and one of the world capitals of music .
170 Vienna is the undisputed cultural centre of Austria and one of the world capitals of music .

24 Operas , concerts , and theatrical performances have played a major part in Viennese life for centuries .
172 Operas , concerts , and theatrical performances have played a major part in Viennese life for centuries , and many world-famous composers lived and worked in the city .

25 The city is well-known for music in part because of the many famous composers who lived and worked there .
172 Operas , concerts , and theatrical performances have played a major part in Viennese life for centuries , and many world-famous composers lived and worked in the city .

27 Today operas can be seen at the world-famous Vienna State Opera House and plays can be seen at the Burgtheater .
175 The Vienna Philharmonic Orchestra gives frequent Saturday afternoon and Sunday morning concerts and also performs during the week at the State Opera House .

29 The government employs many people in the Austrian capital .
127 Although commerce and industry form the base of Vienna's economy , government and public administration on all levels is also a major employer in the Austrian capital .

30 Tourism is also an important part of the economy .
129 Tourism is also an important economic activity with some two million travelers visiting the city annually .

31 The leading industries include the manufacture of transport equipment , electrical machinery , chemicals , and electrical goods .
133 Leading industries include the manufacture of machinery ( primarily electrical machinery and transportation equipment ) , electrical products , chemicals , and metal products .

34 In the 1st century AD the site became a Roman military post named Vindobona .
200 In 16-15 BC the Romans , under the future emperor Tiberius , occupied the foothills of the Alps , and in the next century the Celtic town of Vindobona ( Celtic: "White Field"; later to become Vienna ) became a strategic Roman garrison town .

37 The city's name was recorded in documents dating from 881 as Wenia and from 1030 as Wienis .
206 The city's name was recorded in 881 as Wenia and in 1030 as Wienis .

38 In about 1150 the dukes of Babenberg , a Frankish ruling family , made Vienna their capital .
207 The dukes of Babenberg , a Frankish dynasty , were overlords of Vienna from 1156 to 1246 .

46 The city improved the drinking-water supply and introduced trams and railways .
262 The drinking-water supply was improved with springwater; the Danube was regulated; and , later , gas and electric works were built .

47 After World War I ( 1914-18 ) , the Hapsburg empire came to an end .
5 In 1918 it became the capital of the truncated , landlocked central European country that emerged from World War I as a republic .

48 Vienna then became the capital of the small , newly formed country of Austria .
8 In 1955 the State Treaty , by which the country regained independence , was signed with the four occupying powers , and Vienna became once again the capital of a sovereign Austria .

50 This instability made it easier for German troops to take over Austria in 1938 .
103 There were also moves in population from eastern to western Austria connected with the German annexation of Austria from 1938 to 1945 and the presence of Soviet troops from 1945 to 1955 .

52 After the war ended in 1945 , Vienna was occupied by the four Allied powers: Great Britain , France , the United States , and the Soviet Union .
297 In September the city , like the country as a whole , was divided into four zones of occupation by the Allied powers .

55 Along with New York City and Geneva , Switzerland , Vienna is a headquarters of the United Nations ( UN) .
306 With the rise of the UNO-City , Vienna has become competitive with New York City and Geneva as a seat of world organizations .

57 Population ( 2000 estimate ) , 1,608,144 .
299 The city's population had fallen to 1,322,000 .