The focus of Enns is the clock tower on the main square. You can climb it for a Euro, and the view is incredible: you can even see the confluence of the Enns and Danube Rivers.
Enns is the oldest city in Austria, according to their articles of incorporation (1212). But the Romans were here in 212! The Museum Lauriacum is a gem. All of the Roman finds on display were actually excavated in Enns. The most important exhibit is the ceiling fresco of Cupid and Psyche:It's nice to be in Enns again. It's one of the places I really feel "at home."