A hexagonal living room and a similarly six-sided fireplace create the focal point of this three-bedroom, three-bath Shelter Island home listed for $1.645 million.

The centrally located living room has vaulted ceilings, skylights, a bluestone hearth and views over the home’s pool to Menantic Creek.

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“It’s very dramatic,” says listing agent Linda McCarthy, of Daniel Gale Sotheby’s International Realty. The co-listing agency is M. Wein Realty.

The foyer opens to a bedroom suite and a second bedroom currently being used as an office. Beyond the living room, there is a dining room and an eat-in kitchen with a skylight. A master bedroom has water views, vaulted ceilings and a full bath en-suite.

The walkout lower level has a central den, a media room, a small kitchenette and sliding doors to the property. There is also a bedroom, office space and a laundry room.

Throughout the home, sliding doors open to a full wraparound deck that is partially covered beneath a roof overhang. The property steps down to an in-ground gunite swimming pool, which is surrounded by a mahogany deck. The home has central air conditioning and a dock.

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Correction: A previous version of this story had the wrong photo of the house.