Not a list of every city in Massachusetts. These are the places I know square by square: the building stock, the walk to the train, and what a block is really worth versus what the neighborhood average says. Pick one and I'll show you the version I'd give a friend.
Boston's oldest street pattern and its newest waterfront towers, four blocks apart. Tight walk-ups on one side, full-service elevator buildings on the other.
The blocks
Hanover StreetGreen and Orange at Haymarket
Salem Street and the LanesGreen and Orange at Haymarket
North Square and the Old QuarterGreen and Orange at Haymarket
The Greenway EdgeGreen and Orange at Haymarket, Blue Line at Aquarium
The largest intact Victorian rowhouse district in the country, organized around oval parks, with a warehouse loft market grafted onto its southern edge.
The blocks
The SquaresOrange Line at Back Bay, Silver Line on Washington Street
Tremont StreetOrange Line at Back Bay
Columbus AvenueOrange Line and commuter rail at Back Bay
Shawmut Avenue and Washington StreetSilver Line on Washington Street