When I asked the guide on the Collette Winter Wonderland trip how he would advise any traveler who had to choose between visiting Jasper and Banff, he ducked my question. Instead he said the one not-to-miss sight in the area is the Icefields Parkway, the 144-mile scenic highway that connects the two parks. I soon understood his answer. At every turn along this drive, you'll find vistas of soaring peaks, many capped with snow and ice year-round, beautiful valleys, and waterfalls, rushing in the summer and frozen into beautiful sculptures in the winter. There's a reason why this route has made so many lists of the world's most scenic drives.