Prince Edward Island National Park, on Canada's east coast. We were in this park mid-Sept 2006, and thoroughly enjoyed it. The campground section closes after Labor Day, so we were staying in a nearby cabin, and were in the park for day use. Sorry I don't have any pictures of an actual camp site, but one of these summers we will get back there with the Jayco to take some of those! The harbour pictures are from right adjacent the National Park, a place called North Rustico harbour.
The above link will give you more info.