The Frankford Line is a rapid transit line in Philadelphia, Pennsylvania, operated by the Southeastern Pennsylvania Transportation Authority (SEPTA). It runs from the Frankford Terminal in the northeast to the Market-Frankford Line at the 5th Street/Independence Hall Station in the city center. The line primarily serves the neighborhoods of Frankford, Kensington, and Fishtown. This transit line is known for its elevated and underground sections, providing efficient transportation for commuters and residents. The Frankford Line is an essential part of Philadelphia's public transit system, connecting various communities and facilitating access to key areas in the city.