Located on one of the most charming streets in Killingworth sits a one-of-a-kind antique post & beam modernized & converted barn; c. 1725. Situated on 8.7 acres with direct access to the Hammonasset River, this home is a peaceful retreat steeped in history-previously serving as the summer guest cottage for the Johnson & Johnson family. A welcoming foyer w/ cathedral ceiling leads to a majestic great room, where walls of glass w/ southern exposure illuminate the 25+ ft beadboard ceilings. A Vermont soapstone fireplace w/ a red brick hearth serves as the centerpiece, complemented by wide-plank chestnut floors & functional built-ins. Entertaining is effortless in the open-concept living & dining great room & the newly renovated home office, featuring custom built-in cabinets, offers stunning views. Relax on the enclosed bluestone patio overlooking the gardens & the Mountain Pond designed Gunite pool. The sunny kitchen features vaulted ceilings, exposed beams, granite countertops & it provides access to the deck & pool. Main-level flex space & second-level primary loft suite featuring a clawfoot tub-the layout is as versatile as it is beautiful. The backyard offers 12 fruit trees: pear, apple, peach, cherry & mulberry as well as established concord grapes & blueberry bushes. Newly installed Hardie board siding offers a no maintenance exterior & a whole house generator offers peace of mind. Too many updates to list; this home must be seen to be appreciated.