Comfort Island Alexandria Bay, New York was built in 1883 by industrialist Alson E. Clark. It is located on the St. Lawrence River in the Thousand Islands Region in what is known as Millionaire's row. Millionaire's row is a series of islands developed by Gilded Age industrialists such as George Boldt (Boldt Castle) of the Waldorf Astoria and George Pullman (Castle Rest) of the Pullman Palace Car Co.

The region is dotted with Gilded age Castles such as Frederick Bourne's Dark Island/Singer Castle (Singer Sewing Machine) and W.O. Wyckoff's Carleton Island Villa (Remington Typewriter). Comfort Island is one of the earliest of the large estates and the only known to be still owned by the original family. A son of the builder of the estate, Alson Skinner Clark, a well known impressionist, painted many works in, on, and of the structure throughout his life that still remain as they were from the early part of the century