Gotthard Train Model

Check out this great Märklin HO model train track layout of the Göschenen railway station at the entrance to the Gotthard tunnel.

The town of Interlaken

here is the train ride to the Jungfrau with very helpful explanations. Jungfrau Switzerland via Interlaken and Grindelwald.

Awesome Mountain Biking Trails

You can do mountain biking in Interlaken, yet, Interlaken is not the only attractive and challenging course in Switzerland for mountain bikers.