Article & Photos by Jacqueline Bennett newsandviewsjb.com   With the arrival of springtime, coastal Connecticut is calling. Among the numerous beautiful spots to visit are Harkness Memorial Park and the Eugene O’Neil Memorial Theater Center – neighbors on Great Neck Road in Waterford.   Originally the park was home to a 42-room Italian style estate built in 1906 surrounded by lawns and landscaped gardens. From Memorial Day Weekend to Labor Day Weekend, that mansion is open for guided tours. Presently, the park is a public facility complete with picnic tables, grills, and grounds ideal for long walks complimented by a magnificent view of Long Island Sound.     Pack a lunch, sneakers and/or a fishing pole because fishing is allowed here but no…