Just twenty minutes north of Whistler, British Columbia, Nairn Falls Provincial Park is a great spot to pull over and witness the power of water. From the parking lot it's just a 3 kilometer round trip hike to the falls - it's so easy I would even call it more of a walk. The trail meanders along the banks of the Green River and in some sections the drop off is rather steep, so take care with shaky walkers, small children, and dogs.
After 1.5 kilometers you'll make it to several viewing spots of different sections of the cascade. I would recommend making a left and heading down the rocks to the lower cascade and then wandering your way around the fenced area to the top of that lower cascade. Next, head up to the wooden platform to view the main cascade, grab a spot to sit, and enjoy a picnic lunch.
Take care while exploring this area, it's a spiritual site of the Lil'wat Nation and a beautiful preserved example of potholes, which are created as the water swirls it's way into eroding the rock.