Ellacoya State Park Ellacoya State Park is located in Gilford on the southwest shore of Lake Winnipesaukee, New Hampshire's largest lake. The 600 Gilford, NH State Parks Windhill Design Gilford, NH Other Attractions Heirlooms & Old Lace Gilford, NH Other Attractions Glendale Tavern Gilford, NH Businesses Airport Country Store & Deli Gilford, NH Other Attractions