Vienna is famous for its many parks. Many of these parks include monuments, such as the Stadtpark and Belvedere Park with its baroque-style castle where the State Treaty was signed. The principal park of Vienna is the Prater, which is situated on an island formed by the Danube River and the canal. Schönbrunn, the beatiful Imperial Summer Palace, includes an 18th century park and the world’s oldest zoo (1752).

Vienna’s postal codes can be determined by the district where a given address is located; 1XXA - 1 denotes Vienna, XX the district number (if it is a single digit then with a leading zero), A is the number of the post office (irrelevant in this case, usually zero). Example: 1070 for Neubau. Exceptions of that are 1300 for the Vienna International Airport located in Lower Austria near Schwechat, 1400 for the UN Complex, 1450 for the Austria Center, and 1500 for the Austrian UN-Forces.