All around the suburbs of Nottingham and its suburbs you will see walls built of Bulwell stone. Bulwell Stone is popular because of its gold/buff/orange colour (due to traces of iron oxide) and because it weathers down quickly to look old. The blocks are traditionally hand dressed in this rough, rounded shape.
Bulwell Stone actually used to be quarried in Bulwell (and nearby Basford), but now most supplies come from the Yellowstone Quarry in Linby, Notts.
This monster wall is on the corner of Sneinton Hermitage and Manvers Street.