Stay in Arosa between mid-June and late October and you'll receive the free all-inclusive Guest Card giving unlimited access to mountain transport, local buses, boats on Obersee and the lido at Untersee. The card also allows free entry to the ice rink, minigolf course and rope park. Day trippers can buy the same card for Sfr13 from the train station or tourist office.
Tourist Office Helpful tourist office with details on bike and scooter rental. From the train station, look over the lake to spot the big information mark on the far side.