This sprawling private island on Long Island Sound with Caritas Island waterfront estate sits on three and a half acres accessed by a gated causeway. Extraordinary amenities include a 200-foot pier with a dock, heated saltwater lap pool, expansive flagstone terraces, sandy beaches, stone walkways and footpaths, koi pond, greenhouse, a three-bedroom stone guest cottage and carriage house with two apartments and five garage bays. The main home features 13 bedrooms, 10 and a half baths, eight fireplaces and panoramic views.