A true "Viennese original" is the Oblaten cheese cookie. It dates back to the Austro-Hungarian Empire and has enjoyed great popularity for more than 100 years. The pastry is available in various flavors and is an ideal accompaniment to wine.
You can buy the pastries at Haas & Haas Wine & Delicatessen (Ertlgasse 4, 1010) or at the Viennese wafer store (Rechte Wienzeile 25-27, 1040) - here the wafers are also made fresh by hand every day. In addition to the savory cheese pastries, Viennese wafers (e.g. for making an original Viennese wafer cake) can also be purchased here.