Fukuoka Dome
Montreal's Olympic Stadium featured a retractable membrane roof in 1988, although repeated tearing led to its replacement with a non-retractable roof. The SkyDome of Toronto opened in 1989 with a rigid system in four parts: one that is fixed, two that slide horizontally, and one that rotates along the edge of the 213 meter wide span. In Japan, the 1993 Fukuoka Dome featured a 222-meter dome in three parts, two of which rotated under the third.