Spiez is the gentle side of the Bernese Oberland: a small town on a sheltered bay of Lake Thun, with vineyards on the slope, a castle above the water, and the pyramid of the Niesen rising behind. It is prettier than its role as a railway junction suggests.
The classic visit is simple: walk down from the station to Spiez Castle, wander the lakeside, then follow the vineyard paths above the bay. Boats link Spiez with Thun, Oberhofen, and Interlaken, so it fits easily into a Lake Thun day.
Spiez is not a place for nightlife or big-city museums. Its strength is slower: a swim in summer, a glass of local wine, a boat across the lake, and mountain views that arrive without the crowds of Interlaken.