Point Pelee is a national park in Essex County in southwestern Ontario, Canada where it extends into Lake Erie. Point Pelee consists of a peninsula of land, mainly of marsh and woodland habitats, that tapers to a sharp point as it extends into Lake Erie. Middle Island, Point Pelee is the southernmost point of mainland Canada, and is located on a foundation of glacial sand, silt and gravel that bites into Lake Erie. Point Pelee is famous for the migration of thousands of birds in the Spring and the migration of Monarch butterflies in the Autumn who wait for the winds to be just right before taking off for a 4000km trip across Lake Erie to the south.