Danube Valley Day Trip from Vienna. Spend a day discovering Austria’s UNESCO-listed Wachau Valley on this trip along the Danube River from Vienna. Led by a local guide, pass the vineyards, abbeys and forests of the countryside as you learn about the area’s rich history. Top off your day trip with a 1.5-hour boat ride to Melk along the Danube, where you’ll visit a Benedictine abbey overlooking the river. Your excursion will conclude with transportation back to Vienna. Book and Save 10% Off Danube Valley Day Trip from Vienna.