Sullivan's Castle Island

4.6 ( 1823 reviews )
Checking... 9:00 AM - 6:30 PM See Hours
$10–20
2080 William J Day Blvd, South Boston, MA 02127, United States
+1 617-268-5685
Sullivan's Castle Island, nestled along the picturesque coastline of South Boston, is a must-visit for seafood enthusiasts. Patrons rave about the fresh lobster rolls, clam bellies, and baked fish, each prepared with care and a signature Sullivan sauce that tantalizes the taste buds. Mark Means, a first-time visitor, highlights the excellent seafood but notes the portion sizes could be more generous for the price. Bob L echoes this sentiment, highlighting the culinary delights paired with stunning ocean views. The crab cake sandwich and crispy onion rings stand out, though he suggests visiting during off-peak times to avoid crowds. The atmosphere at Sullivan's is inviting and casual, making it perfect for a relaxed dining experience. Kathleen Fahey praises the toasted lobster roll and refreshing raspberry lime rickey, which complement the seaside spot beautifully. For those who enjoy a hearty meal with a side of scenic beauty, Sullivan's is the place to be. The staff's attention to detail and pleasant service enhance the overall dining experience, ensuring that first-time visitors, like Abby Baker, are charmed by both the food and the ambiance. With its commitment to quality seafood and a welcoming atmosphere, Sullivan's Castle Island is truly a culinary gem worth exploring.

Amenities and More

  • Accessibility
    • Has wheelchair-accessible car park
    • Has wheelchair-accessible entrance
    • Has wheelchair-accessible seating
  • Service options
    • Has outdoor seating
    • Offers kerbside pickup
    • Offers delivery
    • On-site services available
    • Offers takeaway
    • Serves dine-in
  • Popular for
    • Popular for lunch
    • Popular for dinner
    • Good for solo dining
  • Offerings
    • Serves beer
    • Serves cocktails
    • Serves coffee
    • Serves comfort food
    • Quick bite
  • Dining options
    • Serves breakfast
    • Serves lunch
    • Serves dinner
    • Serves dessert
    • Has seating
  • Amenities
    • Has toilet
  • Atmosphere
    • Casual
    • Historic
    • Trendy
  • Crowd
    • Good for groups
    • Popular with tourists
    • Popular with university students
  • Planning
    • Usually has a wait
    • Doesn't accept reservations
  • Payments
    • Accepts credit cards
    • Accepts debit cards
    • Accepts NFC mobile payments
    • Credit cards
  • Children
    • Good for kids
    • Has kids' menu
  • Parking
    • Free of charge street parking
    • Free parking lot
    • Plenty of parking

Reviews For Sullivan's Castle Island

Mark Means
May 17,2025
This establishment is EXCELLENT! Earlier this afternoon 4-21-25, my girlfriend and I attended this establishment for the very FIRST time; Order#562. The seafood (Lobster roll; clam bellies; and scallops) is a 10! The ONLY complaint / disappointment that I have, is the PORTION SIZE, which I will give a 5, especially for the 100 that I spent here. Other than that, the entire atmosphere, including customer service, were EXCELLENT! Thank you, Sullivan's, for such a great time, and I will attend again in the near future. Respectfully, M. Means.
Bob L
Mar 29,2025
This place is crazy popular so make sure to brace for the crowds or go during the off hours (or better yet off season BUT do note that they close during the winter months). I've been here a few times but finally got around to making a review for it. There's nothing better than having a great meal while having a scenic view of the ocean (be prepared to not get too distracted unless you want the seagulls making a move on your food!). Items we had on this trip (as of 10/20): - Small fries - 2.50 - Nothing special. Could be crispier. - Onion rings - 6.95 - These are on the greasy side but man are they delicious! The batter is very crunchy and perfect for any onion ring lover out there. You also get a LOT for what you pay (see photos as a reference). - Chicken Caesar salad - 7.95 - not bad considering the price but definitely not something I would go out of my way to get if you're here. - Crab cake sandwich - 9.95 - Great crab flavor without too much breading. For 10 it's definitely not a bad option to have. If you're in the area stop by, enjoy the views and have some great food at a very reasonable price! (NOTE: During the summer months parking can be a bit hectic so be prepared to find parking before you reach the restaurant if it looks crazy).
Chris Eskola
Mar 14,2025
Sullivan's is the best. I love this place. I especially love the crinkle cut fries. Best crinkle cut fries in the world. My only critique is that I wish they would sell Polar Seltzer (local company) instead of Perrier (Nestle)
Kathleen Fahey
Mar 8,2025
It wasn't crowded even though it was a beautiful day. 1 ordered the lobster roll & a raspberry lime rickey when I got there. It was ready quickly. The hot dog roll was toasted perfectly. There were big chunks of lobster and just a small amount of mayo - just right. The price is reasonable only 21. And they make the best raspberry lime rickey, so refreshing.
Abby Baker
Mar 8,2025
We were in the area and sullivans was recommended to us by a southy. We had the lobster roll and a haddock sandwich. Both were delicious. The charm and ambiance were great. Nothing fancy just good food. Enjoyed walking castle island too. Recommended!
Apolline MARABELLE
Mar 3,2025
Kind staff, very good food, amazing lobster rolls and fries! The chicken caesar wrap was also great !
Mi H
Feb 28,2025
Pretty good food, it’s located in a perfect spot for a picnic or walk by the water. Good portion size for how much I payed
Michael Krikonis
Feb 11,2025
Was just there today. I'm a fan of how the onion rings are hand cut and nicely battered. I've had the dogs, burger, and lobster rolls - all good and highly recommend it to others. Be prepared to wait in line on a nice day. Order ahead is an option.

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