Enns holds Austria's oldest town charter (1212) and sits on the site of Lauriacum, one of the most important Roman legionary fortresses on the Danubian frontier. The Basilica of St. Laurenz incorporates Roman foundations and commemorates St. Florian, Upper Austria's patron saint. The medieval Stadtturm on the Hauptplatz anchors a compact old town that follows Roman grid streets. About 20 minutes from Linz by car or train; pairs well with nearby Steyr and, for those with an interest in difficult history, the Mauthausen memorial site 15 minutes away.