The John Innes Kane Cottage, also known as Breakwater and Atlantique, is a historic summer estate house at 45 Hancock Street in Bar Harbor, Maine.

[1] The Kane Cottage is set on a nearly 4-acre (1.6 ha) parcel of land on a bluff overlooking Frenchman Bay, near the village of Bar Harbor.

The western facade presents the land-side entrance, which is set under a projecting gable-roofed portico supported by heavy wooden timbers.

The eastern facade faces the water, and is composed symmetrically, with outer cross gables flanking a porch area in the center.

The great hall is lavishly decorated with Colonial Revival woodwork, including Tuscan columns, paneling, and crown molding.