The riverside village of Melk is best known for its spectacular abbey, a Baroque masterpiece that dominates the landscape. A Benedictine abbey was first established here in 1089, and the 18th century reconstruction that you can see today is still a working monastery.

Bratislava, Slovakia’s quaint little capital, straddles the Danube close to the border with Austria and Hungary. The compact old town is the best place to begin your exploration, before heading up to the hilltop castle for commanding views of the city and surrounding countryside.

Formerly the centre of the Habsburg Empire, Vienna is as grand a European capital as you can imagine, jam packed full of thrusting, bombastic buildings that stand as a reminder of Austria’s glorious imperial heyday.

Krems sits on the river Danube at the eastern end of the beautiful Wachau Valley, surrounded by vineyards. It’s an attractive old town, with pretty cobbled streets and a good selection of galleries and museums, as well as some excellent restaurants.

The city of Linz is included on river cruise itineraries due to its proximity to Salzburg, which is where you’ll most likely be headed. Salzburg’s Altstadt attracts millions of visitors every year with its fairytale skyline of domes and spires, and the city is renowned as both the birthplace of Mozart and the setting for ‘The Sound of Music’.