Portsmouth, New Hampshire
From the above website, "Prescott Park was created and has been maintained by the terms of the last will and testament of Josie F. Prescott, a life long resident of the City of Portsmouth. It was her wish that a public park, free and accessible to all, be established along the Portsmouth waterfront replacing what had become a run down industrial area of Portsmouth.
I love this garden, because it's beautifully maintained, is next to the Piscataqua River and feet from the Strawberry Banke Museum (see my blog with photos).
Unfortunately, I can't share more photos of the garden or the waterfront, because they were on another server and were deleted. Below is a map, showing the size and location.