Tulln is one of the oldest towns in Austria. Although it was settled in pre-Roman times (the name Tulln is presumably a Celtic word), it gained importance as the Roman fort of Comagena (Comagenis). In the final years of Roman rule, Saint Severinus of Noricum is said to have visited the city, saving it from the Barbarians.
In 859, the town was first mentioned as Tullina in a document. It gained importance as a residence to the Babenberg Margraves, fading as Vienna eventually grew. On September 6, 1683, the Polish army united here with Imperial (Austrian) forces, as well as troops from Saxony, Bavaria, Baden, Franconia and Swabia, for the Battle of Vienna. The 20th century was another period of growth, and in 1986, Tulln applied to become capital of Lower Austria, although Sankt Pölten eventually won
