Considered one of the world's 50 best restaurants, this eatery is definitely the most raved-about place in Austria. It's in the former Milchhauspavilion, a grand Jugendstil-vintage dairy overlooking the Wienfluss promenade in the Stadtpark, the main city park on the Ringstrasse. Winning dishes include delicate wild boar's head with "purple haze" carrots, turbot in an avocado crust, or char in beeswax, yellow turnips, and cream. At the end of the meal, an outstanding selection of more than 120 cheeses await. If you don't want the gala Steirereck experience, opt for a bite in the more casual lower-floor Meierei, which is still stylish, with its hand-painted floor and furniture in shades of milky white.