My Watermark is Lake Ontario.
I purchased a sail boat in 1994 and discovered Lake Ontario. I lived in Mississauga for a number of year and was somewhat aware that there was water south on the city but never quantified the size of the lake. I was initially concerned about get involved with a new activity that was as involved and complex as sailing. However, I joined the National Yacht Club that has a great learn to sail program and soon was sailing and racing the boat on Lake Ontario.