Sentinel is a large scale Corten steel sculpture dating to 1963-64, originally commissioned by the school of architecture at University of Toronto, but gifted to the town of Stouffville in November of 2019. Its shape is composed of geometric angular planes and bent steel rods.

Sentinel was originally displayed on campus at the University of Toronto, where It served as both a source of inspiration and a practical study in form, materials, and spatial relationships.