Philadelphia Naval Shipyard

The Navy Yard, formerly known as the Philadelphia Naval Shipyard and Philadelphia Naval Business Center, was an important naval shipyard of the United States for almost two centuries. It is now a large mixed-use campus that employs nearly 15,000 people across a mix of industries, and includes cutting edge cell therapy production facilities, global fashion companies, and a commercial shipyard.

Philadelphia's original navy yard, begun in 1776 on Front Street and Federal Street in what is now the Pennsport section of the city, was the first naval shipyard of the United States. The new, much larger yard grew up around facilities begun in 1871 on League Island at the confluence of the Delaware and Schuylkill rivers.

Wikipedia