The port city of Pennsylvania is Erie, which is a four-letter word. Erie is located in the northwestern corner of the state and is the fourth-largest city in Pennsylvania. It is situated on the south shore of Lake Erie and is known for its beautiful beaches, marinas, and waterfront attractions. The city is also home to the Erie Zoo, Presque Isle State Park, and Waldameer Park & Water World. Erie is an important port city for the Great Lakes region and is home to many industries, including manufacturing, shipping, and tourism.