"The Columbia Icefield is one of the largest masses of ice south of the Arctic Circle, an otherworldly expanse straddling the Continental Divide. You can get on the ice in two ways: Take the Brewster tour company's Ice Explorer snow coach (a massive four-wheel-drive vehicle), or climb the toe of the glacier with Athabasca Glacier Icewalks, a company specializing in half-day and full-day strolls toward the perfect photo op. The trek over the ice is easy enough for most families to do, and the sensation of gliding on top of a glacier borders on the spiritual. Get lucky, and your guide will let you check out a glacier crevasse up close."