Rich in historic lore, Pennsylvania territory was disputed in the early 1600s among the Dutch, the Swedes, and the English. Valley Forge, of Revolutionary War fame, and Gettysburg, site of the pivotal battle of the Civil War, are both in Pennsylvania. The Liberty Bell is located in a glass pavilion across from Independence Hall in Philadelphia. With the decline of the coal, steel, and railroad industries, Pennsylvania's industry has diversified, although the state still leads the country in the production of specialty steel. Also important are brick and tiles, glass, limestone, and slate.
Data processing is also increasingly important.
Leading products are milk, poultry, eggs, a variety of fruits, sweet corn, potatoes, mushrooms, cheese, beans, hay, maple syrup, and Christmas trees. Pennsylvania has the largest rural population in the nation. Among the chief attractions are the Gettysburg National Military Park, Valley Forge National Historical Park, Independence National Historical Park in Philadelphia, the Pennsylvania Dutch region, the Eisenhower farm near Gettysburg, and the Delaware Water Gap National Recreation Area. In honor of Adm. Sir William Penn, father of William Penn.