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Mary O'Malley State Park

Open to the publicPark · Chelsea, MAUpdated Aug 14, 2026
Right now

Mary O'Malley State Park sits on Admiral's Hill overlooking the Mystic River, with open lawns, a playground, tennis courts, picnic pavilions, and a historic fishing pier facing the Boston skyline and Tobin Bridge. Vehicles stop at the parking lots; the park itself is walk-in only past the gate.

What to expect

Parking
Free lot free
Entry fee
Free
Accessibility
Paved paths throughout the park
Fishing
Allowed unknown
Managed by
DCR, Division of State Parks and Recreation (Mystic River State Reservation) (617) 727-5380 · Website

Getting in

Parking
Free lot
Costfree

What's here

On site

Restroom
Bathroom building near the fishing pier
Picnic area
Picnic pavilions and open lawn for picnicking
Dock
Historic fishing pier; DCR has been repairing wharf erosion damage

Common questions

Is Mary O'Malley State Park open today?
Mary O'Malley State Park is a public park in Chelsea, MA. There is no live closure feed for parks; the town's site is the authority for temporary closures.
Can I drive all the way into the park?
No, cars stop at one of the two parking lots and the rest of the park is walk-in only past the gate.
Is there fishing access?
Yes, a historic fishing pier sits near the bathroom building, though DCR has been repairing erosion damage to the wharf.
Where do I park at Mary O'Malley State Park?
Free lot (free).
Is there an entry fee at Mary O'Malley State Park?
No, entry is free.
Is Mary O'Malley State Park wheelchair accessible?
Paved paths throughout the park
What rules should I know at Mary O'Malley State Park?
Fishing pier and wharf have experienced erosion damage; DCR has undertaken repairs.

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BetaDetails are sourced from public agency data and can change through the season. Confirm locally before you go. Sourced 2026-07-15. Official source. Updated 2026-08-14.