Ohio is located in the Midwest region of the United States, bordered by Indiana, Kentucky, Pennsylvania and West Virginia. It has diverse terrain ranging from plains to plateaus and lakes. Major cities include Cleveland, Cincinnati and Columbus. The climate is temperate with warm summers averaging 73 degrees and cold winters averaging 23 degrees. Transportation within Ohio is primarily by car, train, plane and bus, and it has numerous airports and routes. Ohio's economy relies on agriculture including crops like corn, oats, grapes and potatoes as well as fishing and maple syrup production.