Heera Mandi — the "Diamond Market" — is the historic red-light district immediately north of the Badshahi Mosque. By day it is a slightly run-down working-class neighbourhood with kabab stalls, tikka shops, and rooftops overlooking the great mosque; by night it has a complicated, semi-clandestine other life.
It is a place to walk through at dusk for the Food Street that runs along the rooftops with the Badshahi Mosque framed beyond, not a place to linger after dark. The 19th-century courtesan culture is long gone; what remains is a residual atmosphere and some of the best mutton paya in Pakistan.