Stadtpark is one of the best and most central parks in Vienna. Tourists love to visit the golden Johann Strauss statue there. Locals either hang out on the lawn or go to the yummy dairy bar and cafe Meierei im Stadtpark, next to the Wien river. Right behind is gourmet restaurant Steirereck im Stadtpark, Austria's best restaurant (that's worth a story of its own).
The river promenade on the photo is lined with beautiful art nouveau blue amphoras. The entry into the underground river is well known from the cult classic film The Third Man.
In the summer, the large lawn is a popular picnic place.