Le Petit in the Josefstadt is the smallest theater in the world. It only has room for 21 spectators.
The famous French croissant was actually invented by a Viennese baker who was inspired by the Turkish war insignia at the siege of Vienna in 1683, which showed a crescent. It was introduced into France by Marie Antoinette.
The Wiener Zeitung is the oldest daily newspaper in the world that is still publishing. Its first edition dates from 8 August 1703.
The first coffee in Vienna is said to have been brewed when the Turks left bags with green coffee beans in 1683 and only a Polish spy knew what to do with them.
Most parts of Vienna enjoy some of the cleanest tap water in the world: Since 1873, it has been piped directly from the mountains, to the chagrin of the mineral water industry.
When Beethoven lived in Vienna, he changed his domicile dozens of times. The three most important houses he lived and worked in are the Eroica-Haus in Doblinger Hauptstrasse 92, the Pasqualati-Haus in Molker Bastei 8 and the Heilgenstadter-Testament-Haus in Probusgasse 6.
Guests who were invited to dine with Emperor Franz Josef often went hungry. The emperor was known to be a fast eater, and as soon as he dropped his fork and knife, dinner was over, often before the guests had a chance to tuck into their meal.