HarknessMemorialStatePark is a historic preservation area located on Long Island Sound in Waterford, Connecticut. The statepark's 304 acres center around Eolia, a 42-room Renaissance Revival mansion with formal gardens and greenhouses. Eolia - The Mansion at HarknessMemorialStatePark is available for weddings, private parties, seminars, conferences, luncheons, and teas from March 1 to December 23. HarknessMemorialStatePark Japanse Maple Hideaway © Robin McMenamin The lines and the curvature of this tree is an example of how beauty lies in the imperfect. This tree never runs out of shapes. When it is covered in the summer, it is a perfect hideaway spot. HarknessMemorialStatePark has a fine collection of gardens, historic homes, picnic areas & beaches on the Connecticut shoreline. HarknessMemorialStatePark Waterford May 2011.Harkness is not your typical Connecticut statepark. There are no hills to climb or slimy ponds in which to swim. HarknessMemorialStatePark, a Connecticut park located near Colchester, Groton and Mystic | Stateparks, Colchester, Connecticut.HarknessMemorialStatePark Wedding. Long Island Sound Landmark. Eolia Mansion At HarknessState. HarknessMemorialStatePark is a picturesque tourist attraction located in Waterford, Connecticut.Whether you're looking for a peaceful retreat, a place to explore nature, or a spot to enjoy a scenic picnic, HarknessMemorialStatePark offers something for everyone. HarknessMemorialStatePark, located in Waterford, is a picturesque destination for walkers and runners alike. With its sprawling 280.4 acres, the park offers a variety of scenic trails and paths that cater to all levels of fitness. HarknessMemorialStatePark was once a large estate owned by wealthy philanthropists Edward and Mary Harkness. Its centerpiece is their large mansion called Eolia, which features 42 rooms and formal gardens. HarknessMemorialStatePark, located in Waterford, Connecticut, is a statepark that also features a greenhouse and a botanical garden. The park spans an impressive 220 acres, providing ample space for visitors to explore and enjoy the natural beauty of the area.