A short history
William Penn founded Philadelphia in 1682 as a Quaker colony built on religious tolerance, with a planned grid of streets. It became the largest city in the American colonies. The Declaration of Independence was signed at Independence Hall in 1776 and the US Constitution was drafted there in 1787. Philadelphia served as the nation's capital in the 1790s. It later grew into a major industrial city and today is a center for education and health care.