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Rattray Marsh offers a rare natural cobble beach on 90 acres of Lake Ontario shoreline in Mississauga. As the last remaining lakefront marsh between Toronto and Burlington, this environmentally-sensitive wetland offers a unique urban experience for nature lovers. As part of the Lake Ontario’s Waterfront Trail, this area has an extensive boardwalk and is accessible to all levels of experience. Walkers can enjoy the spring trilliums, native and migrating birds and waterfront view in the heart of the city.