Crowninshield Island
This intimate outcropping features a short loop trail and is ideal for families, who can reach the island by boat or, at low tide, on foot across the shallows. Be careful when using the access at low tide, or you may have to swim back to the mainland!
A south-facing lawn is especially picnic friendly. Wander along a short loop trail past rocky outcrops that offer wondrous views of the harbor, other small islands, and 17th-century Fort Sewall.
A short footpath leads walkers around the 5-acre island.