Port Oshawa Marina closed its doors over seven years ago. Since then, debate has ranged about what to do with Oshawa's harbourfront. The marina once housed a clubhouse, showering facilities as well as a swimming pool. The channel led out to Lake Ontario just adjacent to Lakeview Park. As a former member, sailing out on Canada Day to see the fireworks amid a small sea of silent sail and motor boats was one of life's better moments. Now the marina sits silent and still.
UPDATE - August 2016
Access to the site is easy, but beware of wild parsnip along the way. I even encountered a couple of people fishing while I was walking in. Down by the crane sits a nondescript building that in it's time, must have been a very nice clubhouse, complete with bar, dance floor, and kitchen facilities. Vandals have been at work inside, smashing all the glass & putting holes in the walls. Someone even started a small fire on the floor.
I found the Visitor Parking and Dock 1 signs to be ironic, given what has become of this location.