Elfreth's Alley is a residential street located in Philadelphia, Pennsylvania. It is one of the oldest continuously inhabited residential streets in the country, dating to 1702. As of 2012, there are 32 houses on the street, which were built between 1728 and 1836. The Elfreth Alley Museum is located at #124 and 126. The alley is a National Historic Landmark and is located between North 2nd Street and North Front Street, in the block between Arch and Race Streets in the Old City neighborhood.