Alpinzentrum Gstaad. Adrenaline is the main ingredient of this tour operator, which specializes in activities like river rafting, rock climbing, glacier hiking, and high-rope parks. But they also have a gentle side, whether it's an easy snowshoe outing or a mild ride from Thun to Bern on the River Aare. Cheserypl. 1, Gstaad, Bern, 3780. 033/7484161; www.alpinzentrum.ch. From 35 SF.
GrindelwaldBus. The hop-on/hop-off Grösse Scheidegg round-trip is especially popular and covers Interlaken, Brienz, Meiringen, Grosse Scheidegg, and Grindelwald. You can get your ticket at any of the stations for 89 SF–110 SF, depending on whether you want to add a boat ride. It's also possible to charter a van or a bus for custom excursions in the region. Grundstr. 32, Grindelwald, Bern, 3818. 033/8541616; www.grindelwaldbus.ch.