Complex sentence: The 52,000 m² site, which has now been designated a Canadian heritage site, is the largest and best preserved collection of Victorian industrial architecture in North America and was the home of the Gooderham and Worts Distillery.
Split into simpler sentences: The 52,000 m² site, which has now been designated a Canadian heritage site, is the largest and best preserved collection of Victorian industrial architecture in North America. It was the home of the Gooderham and Worts Distillery.