Elfreth's Alley is a historic street in the Old City neighborhood of Philadelphia, Pennsylvania, dating to 1703. The street has 32 houses, built between 1703 and 1836. The Elfreth's Alley Museum is located at#124 and 126.The alley, a National Historic Landmark, runs from North Front Street to North 2nd Street, paralleling Arch and Quarry Streets.