Jewelers' Row, located in the Center City section of Philadelphia, Pennsylvania, is composed of more than 300 retailers, wholesalers, and craftsmen located on Sansom Street between Seventh and Eighth Streets, and on Eighth Street between Chestnut and Walnut Streets.It is the oldest diamond district in America, and second in size only to the one in New York City. Many of the area's retail, jewelrymaking and appraisal businesses have been owned by the same families for five generations.HistoryJeweler’s Row was designed by builder and architect Thomas Carstairs circa 1799 through 1820, for developer William Sansom, as part of the first speculative housing developments in the United States, and introduction of the Row house in the United States. Carstairs Row was built on the southern part of the site occupied by "Morris' Folly" – Robert Morris’ unfinished mansion designed by Pierre Charles L'Enfant.Sansom bought the property and unfinished house of Robert Morris, on Walnut St. between 7th and 8th Sts. He bisected the land with a new east-west eponymous street. Carstairs purchased the south side of Sansom St. and erected 22 look-alike dwellings. Prior to this time houses had been built not in rows, but individually. It can be contrasted with Elfreth's Alley where all the house are of varying heights and widths, with different street lines, doorways and brickwork.
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