Lake Louise State Park is a Minnesota state park just north of the Iowa border near the small town of Le Roy in Mower County, Minnesota, directly south of Rochester. It has a 25 acre man-made lake and 1,168 acres (5 km²) of mixed prairie and deciduous forest. It is used for picnics, swimming, camping, hiking, horseback riding, and other outdoor recreation. It is noted for butterfly watching, as some rare species have been seen.