Sullivan's on Castle Island is officially open again ... "Mustard, relish, onion, a perfectly toasted bun, it's the best," said South Boston resident Chico. Owner Dan Sullivan said that the ...

Sullivan’s Castle Island, located along Pleasure Bay in South Boston, won a 2025 James Beard America’s Classics Award. The America’s Classics Award, which is a category of the James Beard ...

Sullivan’s Castle Island a summer favorite known for its ... all while keeping the spirit of old Boston alive for every customer who walks through our doors.” Sullivan’s opens for its ...