Complex sentence: The Victoria Skating Rink was an indoor skating rink located in Montreal, Quebec, Canada, which opened in 1862, by the start of the twentieth century it was considered "one of the finest covered rinks in the world".
Split into simpler sentences: The Victoria Skating Rink was an indoor skating rink located in Montreal, Quebec, Canada. Opened in 1862, it was described at the start of the twentieth century to be "one of the finest covered rinks in the world".