Winckley Square is situated near the centre of Preston, Lancashire, England, at the west end of Avenham.The square was first established in 1801, around Town End Field owned by Thomas Winckley, as an exclusive residential area for the town's gentry. It is now occupied mostly by insurance, legal and other business offices, although some residential developments have recently been made. The square's gardens, now an open public park, originally consisted of private plots, each owned by a resident.