Vianden is a small town and most things to do can be covered in a single day. The castle dominates everything — it is one of the finest Romanesque-Gothic fortified castles in the whole of western Europe, and the views from its walls down the Our valley are excellent. Below the castle, the old town's steep streets hold the Victor Hugo House and the small Folklore Museum.
The chairlift from town up to the hill above offers a broader view of the castle and valley than you get from the town itself — the classic postcard view of Vianden with the castle on its rocky spur is taken from the hillside the chairlift serves. The Vianden Pumped Storage Plant, a few kilometres north, is one of the largest in Europe and can be visited.