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Photo: Jameslwoodward, CC BY-SA 3.0 via Wikimedia Commons
The Dorothy Quincy Homestead is a National Historic Landmark at 34 Butler Road in Quincy, Massachusetts. The house was originally built in 1686, by Edmund Quincy II, who had an extensive property upon which there were multiple buildings. Today, the site consists of the Dorothy Quincy Homestead, which has been preserved as a museum and is open occasionally to the public.
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Tours include the Old House and the Birthplaces. To see the historic homes, you must join a tour. The last tour leaves at 3:15PM. Site orientation is also available here, along with exhibits, a bookstore and the site's only public restrooms. The 14 acre (56,600 m²) park is comprised of the Birthplaces of John and John Quincy Adams, the Old House and the United First Parish Church. Reservations are required for groups of 8 or more, however, there is no group rate. You can also see the "Adam's Mansion," home of US President John Adams and his son John Quincy Adams, within a short walking distance of the Quincy Center MBTA (redline) station.
Excellent overview of Quincy history in lovely stone building built on the site of Hancock's birth.
Graves of the Adams and Quincy families and John Hancock's father. Interesting graveyard art. Free.
Blacks Creek, along Wollaston Beach, is a very scenic marshland and creek. There are some paths through it, though few are maintained. However there are paths along it opposite the paths along the beach making for a fantastic walk up the beach and back along the marsh. Nestled into Blacks Creek is "Kincade Island", a peninsula into the creek with a children's playground and benches, and is entered by crossing a short wooden bridge.