Philadelphi’s Reading Terminal Market is one of the nation’s oldest continuously operated enclosed food markets, opening in 1892 in the ground floor of the F. H. Kimbal-designed terminal. Like those in New York, Boston, and elsewhere, the enclosed market was seen as a way to get hawkers, hucksters, and dry goods carts off the street, where they were deemed unsightly and unhygienic. The Reading Terminal Market thrived for decades before declining during the era of White Flight, though it was revived in the 80s as an upscale venue for prepared foods and artisanal and organic products. With the current craze for the latter, as well as the return of residents to the city, the market is as popular as ever, necessitating an expansion designed by local firm Friday Architects/Planners. The plan, announced—yes—Friday, involves the reorganization of the aisles to make room for more stores as well as additional retail space on what is currently an office mezzanine. Work is expected to begin early next year and be completed withing six to eight months. You can peep the plans after the jump.