Toronto – Here’s a look at what’s open and closed on Victoria Day long weekend: Open The CN Tower: open 9 a.m. to 9:30 p.m. all weekend, including Monday. Ripley’s Aquarium of Canada:  open 9 a.m. to 11 p.m. all weekend, including Monday. Ontario Science Centre: open 10 a.m. to 5 p.m. all weekend, including Monday. The Royal Ontario Museum: …