Built in 1925 by the Chicago Bridge and Iron Works, this steel-framed water tower was the main water supplier for The Colony on the Ste. Claire, a secluded residential community established in Clay Township during the 1920s. It marked the entrance to the Will St. John estate, home of the real estate developer who founded The Colony subdivision. The 136-foot tower once housed a 60,000-gallon water tank. Constructed with curtain walls and steel plates to resemble a lighthouse, it demonstrates the early twentieth-century penchant for disguising the utilitarian function of highly visible structures. A light shone from atop the tower, aiding boat and aircraft navigation from 1925 until 1937, when the light was extinguished due to its high operating costs.