Red Tower black plaque

This black commemorative plaque records: Red Tower. This Tower marks the termination of the City Walls, and at one time marked the commencement of an impassable swamp, which extended to Layerthorpe Postern, the position of which was near the existing Layerthorpe Bridge; the Tower suffered severely in the siege of 1644 and has undergone many restorations since that period rendered necessary by the nature of the ground on which the foundations are laid. Formerly the Tower was known as Brimstone House after a manufactory carried on within its walls. Recorded plaque organisation: York Civic Trust.

Red Tower, marking the end of the city walls and once overlooking an impassable swamp, has historical significance for its role in the 1644 siege and its former use as Brimstone House for manufacturing.