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 industrial park that includes a commercial shipyard, Aker Philadelphia 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.
The United States Navy ended most of its activities there in the 1990s, and in 2000, the city of Philadelphia took over and began to redevelop the land. The Navy still has a Naval Inactive Ship Maintenance Facility and a few engineering activities at the site.