Massachusetts has a 192-mile long coastline with low hills, small lakes, and shallow rivers. Cape Cod extends 65 miles into the Atlantic Ocean and has sandy beaches, forests, and swamps. The Charles River flows through Boston Common, a former animal park where you can now float in swan boats and discover trees and leaves on the Freedom Trail. Massachusetts is a leading producer of cranberries, apples, dairy, and nursery plants, and produces half of the cranberries eaten in the United States.