A train transfer from an entry point of choice (e.g. Zurich airport or Basel at the border) to Interlaken.
You'll travel from Interlaken via Spiez to Brig. There you'll change to the Glacier Express. You will see the Oberalp Pass and Rhine valley. The night will be spent in the old town of Chur.
Another wonderful train trip: the Bernina Express via the Bernina Pass to Tirano in Italy. You'll return to Chur to spend another night there.
A train transfer from Chur to your preferred point of departure.