High Quality Content by WIKIPEDIA articles! Walnut Street is located in downtown Philadelphia and extends from the city`s Delaware River waterfront through Center City and West Philadelphia. Walnut Street has been characterized as "the city`s premier shopping district". A portion of the street was ranked 12th in 2005 by Women`s Wear Daily among its list of the most expensive retail streets in North America, with rents of $90 per square foot and is home to several "upscale dining, retail and cultural" establishments.