Pennsylvania is home to everything from metropolitan life in Pittsburgh and Philadelphia to the wilds of the Allegheny Plateau. Philadelphia is the birthplace of both the Declaration of Independence and the Constitution, giving the area a wealth of historic attractions. History and the colonial era are further represented in Pennsylvania Dutch Country, where Amish, Mennonite and Brethren communities live a plain, pious lifestyle. Pittsburgh is known for its professional sports and is found at the confluence of three rivers: the Monongahela, the Allegheny and the Ohio. Much of Pennsylvania's landscape is defined by the rocky crags of the Allegheny, Appalachian, Endless and Pocono mountain ranges, the latter famous for its summer and winter resorts. Scattered amongst Pennsylvania's natural environment are attractions related to the once-lucrative coal mining industry as well as a number of covered bridges, one of the state's more revered attractions. Lake Erie also laps the shores of northwest Pennsylvania, offering aquatic and other wilderness attractions.