Had base there - is only reason i know name :) Set "in post-apocalyptic version of Boston & surrounding Massachusetts region, known in-game as "the Commonwealth"... includes the settlement of Diamond City, built within Fenway Park, and early game areas Sanctuary Hills, & Concord.." + Jamaica Plain

... u get to trek round Boston, the country round it, it's v interesting -i learned a fair bit about US history, cos museums in game.

Do you know what town was nuked in atom crater ?

Don't think there is one mentioned - 'southwest of Boston' but Reddit ppl say "somewhere in the area around Framingham and Milford, MA. Lake Cochituate is in the game just on the edge of the Glowing Sea." Big cities got nuked too.