Christ Church is located in southern Islesboro, an island community in Penobscot Bay in central Maine, U.S.A. It is set overlooking Pendleton Point Road, the major north-south route on the narrow island, which runs to the east of the building. It is a roughly cruciform structure, its long axis oriented north-south, and is finished in wooden shingles and stucco, with a rubblestone foundation. It is reached from Christ Church Road by a walkway lined by stone walls that passes over an arched stone bridge. The south-facing main facade has a gabled entrance porch supported by square posts with decorative brackets, with a half-timbered gable. The porch eaves have exposed rafter ends, and the porch is flanked by paired diamond-pane windows. Above the porch in the main gable is a grouping of four similar windows. The eastern facade, on the downhill side of the sloped site, has an exposed basement with stone buttresses and arched louvered openings.
