The Grand Canyon of the Fraser is located about 160km upstream of Prince George, BC. It was here where many of the ill-fated Overlanders met their demise as they attempted to navigate its rapids enroute to the Barkerville Goldfields in late 1862. Fast forward to 2008, and modern sea kayak technology makes the trip through the canyon pleasurable and relatively simple (although you still need basic river skills to handle the waves, boils, and whirlpools - class 2ish at low flows when we did it). Beautiful mountain scenery, a scenic canyon, a sense of history, and a very easy shuttle make this trip a Prince George flatwater classic.
Rick and Matt in the second canyon:
Nearing the takeout at Sinclair Mills and below an interactive map of the run: