You can reach the 2,653-meter-high summit of the Weisshorn either by taking a strenuous but very worthwhile hike, or by taking the cable car in a very relaxed manner while …
A true highlight on this route is the St. Luzi Chapel. It invites you to pause and take a break. Several benches are set up outside. The chapel is apparently open during the day.
Renaturation has created an interesting biotope on Chur's local mountain, Brambrüesch. You can explore the fen on the moor course, but you will have to get off your bike for a short time. It's still worth it.