MARKET PLACE 1. 5330 (South Side) Northumberland Hall (Assembly Rooms) NU 1813 SB 1/63 20.2.52. I GV 2. 1826 with octagonal extension 1830;. Built by Duke of Northumberland. Three storeys, 10 windows; ashlar built. Arcade of depressed arches continued round octagonal, East end with band above; giant order pilasters to moulded cornice; band below 2nd floor; parapet to hipped slate roof. One ridge chimney to west, another on east end wall. Second-floor window mostly blind (1st floor attic). First floor windows have glazing bar and casement arrangement for upper windows. Within arcade a ceiling of long slabs, 1st bay from west blocked and with an upright cast iron pump outside (disused). Old arrangement of market booths with a smallish window between doors still largely survives. East end only 2 storeys to octagonal extension; gable end of main part, articulated with a pediment flanked by 2 giant order pilasters and having antefixae. At west end, blind central ground floor arch has tablet commemorating the gift of the Hall by the Duke to the town 1919.