Yellowknife's houseboat community is truly living off the grid. It began in the early 1980's when one or two families built their own houseboats on old river barges. The community has grown over the years, and the colorful and energy-efficient housing in Yellowknife Bay is a one-of-a-kind attraction for this northern city. Summer boat tours offer glimpses of these floating homes, and in winter, ice roads lead right to their doors. The seasons in between present hazards for house-boaters, when Great Slave Lake ice is forming in early winter, or melting, in spring. At that time of year, the 'boaters' either stay home for a week or two, tending their anchors, or, dragging a canoe behind them for security, they brave the shifting ice on foot, heading for town.