The Charles River Peninsula is a 30-acre (12 ha) nature preserve in Needham, Massachusetts owned and managed by the Trustees of Reservations. The Charles River turns nearly 180 degrees, creating the peninsula. A 20-acre (8 ha) field on the peninsula was farmed for roughly a century. The original acreage was given in 1960; additional land was given in 1994.
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The property includes a loop hiking trail and a boat launch.
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