Elfreths Alley is Americas oldest inhabited alley since 1702! Currently, there are 32 houses that is believed to built since 1728 and 1836! And yes, there ARE still people living here unto this day! Though some are obviously renovated, the houses architectural styles faithful to its original. They are well-preserved and was appointed as a National Landmark. Walking around actually makes you feel like you are back in the 18th century Philadelphia.