Kootenay National Park starts at Radium's doorstep and climbs north through Sinclair Canyon, Marble Canyon, forested valleys, and alpine passes toward the Trans-Canada Highway. Even if you are not crossing the whole park, the first stretch out of Radium gives a strong taste of the western Rockies.
The park makes Radium more than a hot-pool stop. Pair the pools with a canyon walk or a scenic drive and the village becomes a good spare-day base.