On the way back to Vancouver from Whistler, we stopped by Brandy Falls Provincial Park. The park is right next to the Sea-to-Sky Highway, about a 20-minute drive south from Whistler. The parking lot is large and parking is easy.
The trail from the parking lot to the falls is well-maintained and easy to walk, taking about ten minutes to reach the viewpoint. The falls are 70 meters high, cascading down the volcanic rock face, creating a refreshing mist that cools you down when you stand on the viewpoint. You can also see Lake Daisy and Black Tooth Mountain in the distance. The park is free, which is a great feature.
Overall, this place is a good stop on the Sea-to-Sky Highway. You can see nice scenery without walking too much, making it ideal for a less strenuous trip. It might not be worth making a special trip, but stopping to stretch your legs and see the falls is quite nice if you're passing by.