This large area of Phildelphia [1] is packed with restaurants, with the majority concentrated in Chinatown, Washington Square West, and along the Avenue of the Arts.
Chinatown has more than just Chinese restaurants, but also Cambodian, Vietnamese, Burmese, and more.
Wash West, also known as the Gayborhood, offers plenty of BYOBs [2] and bars serving great food, especially along Pine Street, Spruce Street, and 13th Street south of Market.
Avenue of the Arts has mostly large, upscale chains.
Links:
[1] http://www.moon.com/destinations/philadelphia/discover-philadelphia
[2] http://www.moon.com/destinations/philadelphia/restaurants/bring-your-own-bottle-0