Thousand Islands Country Club sits on Wellesley Island in the St. Lawrence River, part of the scenic Thousand Islands region straddling the U.S.-Canadian border in upstate New York. Seth Raynor designed the course in the early 1920s during his prolific period creating template-based layouts across the Northeast. The club occupies a distinctive setting among the river islands, with the layout shaped by the natural terrain and water views characteristic of this resort area. As with Raynor's other designs, the course features his signature template holes adapted to the island topography—likely including versions of the Redan, Short, Eden, and other strategic concepts he employed throughout his portfolio. The routing takes advantage of elevation changes and the surrounding landscape, though the property's island location necessarily constrains the overall scale. Raynor's characteristic deep bunkering and bold green contours remain evident in the design's strategic framework. The club serves the seasonal community of Wellesley Island and the broader Thousand Islands region, an area known historically as a summer retreat destination. The course operates within the rhythms of the northern climate and the island's recreational culture. While not among Raynor's most widely known designs, Thousand Islands represents his template approach applied to an unusual and scenic riverside setting, offering a regional example of his architectural principles in a distinctive geographic context.